Upload
others
View
7
Download
0
Embed Size (px)
Citation preview
~~
Paul W. Pomeroy, United States Geological Survey
E.F.
Weston Observatory of Boston CollegeMassachusetts Institute of Technology
University of ConnecticutLamont-Doherty Geological Observatory of Columbia University
Pennsylvania State UniversityDelaware Geological Survey
Ma;ne Geological Survey
NORTHEASTERN U. S. SEISMIC NETWORK
Nuclear Regulatory Commission
Chiburis, University of Connecticut
'-
Compiled and Edited by
BULLETIN No.5OF
SEISMICITY OF THE NORTHEASTERN UNITED STATESOctober 1,1976 - December 31, 1976
Coordinator
June 1977
MEMBERS
UCONN-NUREG-O208-10
United States Geological SurveyNational Science Foundation
New York State Energy and Resources Development AuthorityNew York State Science Service
R.O. Ahner, Weston Observatory
ACKNOWLEDGEMENTS
Partial or full support from various agencies for the
operation of the Northeastern U.S. Seismic Network is grate-
fully acknowledged. The agencies providing support to members
of NEUSSN are as follows:
The Nuclear Regulatory Commission - Office of Reactor
Safety Research,The United States Geological Survey - Office of Earth-
quake Studies,The National Science Foundation - Geophysics Program,
The New York State Energy and Resources Development
Authority, andThe New York State Science Service.
Data from the Seismic Network operated by the ConsolidatedEdison Company of New York and from an array operated by Weston
Geophysical Engineers in New Hampshire were provided to NEUSSN
and the receipt of these data is gratefully acknowledged.
In adddition to the above operational support, equipmentwas also provided by the Office of Environmental Geology of
the u.S. Geological Survey to members of NEUSSN.
The advanced Research Projects Agency of the Departmentof Defense provided a number of geophones and amplifiers to
all members of NEUSSN.
2.
ABSTRACT
This report is the fifth quarterly bulletin of seismicity
in the northeastern United States and covers the period October
December 1976. Included are geographic maps of the seismic
station locations, the epicenters for the quarter, and the cumulative
epicenters for the five quarters. Also included are tables of the
station locations and of arrival times, amplitudes, and periods
for the fifth quarterly epicenters.
3.
INTRODUCTION
This report is the fifth quarterly bulletin of seismicity
in the northeastern United States for the period October
December, 1976. The organizations supplying data for this bulletin
are '~eston Observatory of Boston College, Lamont-Doherty Geological
the Massachusetts Institute ofObservatory of Columbia University,
data for earthquakes in southeastern New York and northern New
Jersey were supplied by the Consolidated Edison Indian Point network
Arrival time data for events in New Hampshire were supplied by
Epicentral data for events in CanadaWeston Geophysical Engineers.
near the United States were supplied by the Earth Physics Branch,
Department of Energy, Mines and Resources, Canada.
Thirteen seismic stations operating during this reporting
period were not listed in the previous bulletin. The thirteen new
stations are DIA-ME, D2A-ME, D3A-ME, DUX-MA, CSNH, GHNH, LANH,
MBNH, WBNH, BGR-NY, ALV-VT, BRV-VT, and COV-VT. stations ELM-NY,
FOR-NY, HMB-NY, and WLI-NY were not operating during this reporting
Station UWL-NY was erroneously listed as WWL in theperiod.
Table I is a list by state, of the stationsprevious bulletin.
The format ofoperating during the period October - December 1976.
the information included in the tables is as follows:
Three letter station code, as recognized by the1.
National Earthquake Information Center of the U.S
(except as noted by an asteriskGeological Survey
following the station code).
4
2. Station latitude, degrees-Minutes-seconds, north.
Station longitute, degrees-minutes-seconds, west.3.4. Station elevation, meters
s. Geographic name of station.
Network operator responsible for station.6.Figure 1 is a geographic map of the Northeastern U.S. Seismic
there are three regions of coverageNetwork (NEUSSN). In New York,
having clusters of stations too dense to represent separately:
near Attica in the west, near Blue Mountain Lake in the north, and
the stations of the Indian Point nuclear facility in the southeast
Similarly the array in northern Maine near Dickey and the network
in New Hampshire are too closely spaced to be clearly represented.
NORTHEASTERN u. S. SEISMICITY
sixty-seven earth-During the period covered by this bulletin,
quakes were detected and located in the northeastern United States;
included in this total are forty-eight earthquakes of magnitude less
In addition,than one in the Blue Mountain Lake region of New York.
earthquakes occurred in Canada having an epicenter withinfifteen
One of these earthquakes was100 kilometers of the u.s. border.
Figure 2 is a geographic map of thefelt across northern Maine.
Two earthquakes, one inepicenters for October - December 1976.
southeastern Copnecticut and one in northern Maine were heard but
probably not felt. Table II is a chronological list of the
epicenters in Figure 2 with the following format:
5.
1. Date and geographic name of the event.
2. The source of epicenter determination
Lamont-Doherty Geological Observatory
University of Connecticut
Weston Observatory
Massachusetts Institute of Technology
Earth Physics Branch, Dept. of Energy, Mines
and Resources, Canada
3. Origin time of the event, hours-minutes-seconds, UTC.
4. Event latitude, degrees north.
Event longitude, degrees ~'est.5.Root-mean-square error of the least-squares solution.6.
Most magnitudes were computed using7. Event magnitudes.
the relation developed by Nuttli for the "vertical
component Lg wave"; although the wave periods of the
events in Table II are often much less than one second,
the computed magnitudes appear to be consistent within
Magnitudes computed using Nuttli'sthe network.
relation are labelled MBN.
If the solution was restrained8. Event depth, kilometers.
to a particular depth, the letter R is appended
For the events that have epicenters determined by more than
one source, each of the locations is listed.
EARTHQUAKE DATA
The station arrival times and amplitudes used for epicenter
6.
and magnitude calculations are listed in Table III, as well as
The format forthe information already included in Table II.
the additional information in Table III is as follows:
1. Station code.
2. Emergent (E) or impulsive (I), followed by phase type:
If the phase is impulsive,P, PG, p* , PN, S, SG, S*, SN.
direction of first motion is also included if the system
compression (C), dilation (D) or nodal (X) .polarity is known:
3. Station arrival time, hour-minute-second, UTC.
For those events having4 Epicentral distance, kilometers.
more than one epicenter reported, the first epicenter
listed is generally used for distances.
Peak-to-peak ground motion, in millimicrons, of the5.maximum recorded amplitude of the vertical-component
All reported amplitudes havesignal (Rayleigh wave).
been corrected for system response.
Period, in seconds, of the wave from which amplitude6.was measured.
Nuttli magnitude as computed from the amplitude, period7.and distance.
SUSPECTED AND POORLY LOCATED EARTHQUAKES
In addition to the earthquakes listed in Table II, eight
events were detected which could not be definitely identified as
being earthquakes or not enough arrivals were detected to allow
This class of events is listedan acceptable computer solution.
in Table IV, which has the same format as Table III.
N:>rth Iati 'bode , degr~00V
0mIt)
0CX)
V
0VV
0a>~
0to-V
0CDV
0It)V
0~V
0C\JV
0
V
0Vto
0<D<D
0CX)<D
0
0r0-
oC\Jr0-
oVro-
II)
I'0,
f~
0
CDt-
0
a>,...
01ml
Figure 1. SeiSllic stations ~ating during the I:eriod
Ck:tober - ~r 1976.
North Latitude, degrees
0
0V
00')r<)
0mv
0VV
0CD~
0t"-V
0(0V
0In
q-
~q-
0C\JV
0
V
0V(D
0<D<D
0a>CD
CI2
Q)Q)~C'IQ)
'0
,Q)
'0='
4JorofC'I=0H
oI.JU)Q)~
0wroo.
0
m~
0
0CO
Earthquake epicenters during the periodFigure 2.October - December 1976
0
0, 0
C\J, 0
V,
North Latitude, degrees
co
Q)Q)H
~11)
'0
,
Q)
'0~
.IoJ.,of
~~0H
~CO
Q)
~
Figure 3. Earthquake epicenters during the period
October 1975 - December 1976.
TABLE ILIST OF OPERATING SEISMIC STATIONS BY STATE
OCTOBER - DECEMBER 1976
LATITUDE LONGITUDE ELEVATIONDGMNSEC DGMNSEC METERS
STAID OPERATOR
CONNECTICUT
UCTUCTUCTUCTUCTOCTOCT
APTBCTBPTECTHDM .
TMTOCT
41414141414141
720350.0 W732302. W731432. W732440.8 W723123.6 W724756. W721502. W
36983
34224
290149
AVERY POINT, CTBROOKFIELD CENTER, CTBRmGEPORT, CTELLSWORTH, CTHADDAM, CTTALCOTT MOUNTAIN, CTSTORRS, CT
DELAWARE
46 DGSNED 394215.2 N 754229.5 W NEWARK, DE
MAINE
ALLAGASH, ME WESCARIBOU, ME WESDICKEY, ME WESDICKEY, ME (KELLY l-rIN.) WESDICKEY, ME (BROWNS EROOK) WESEAST l-tACHIAS, ~IE WESMILO, ME WESTURNER , ME WES
216250305402259
20140113
AGMCBHDIA*D2A*D3A*EHKHIMTRM
470454. N465557. N470330.8 N470749.3 N470515.2 N444421. N451437.0 N441534.9 N
690124. W680715. W690556.2 .W690908.8 W691007.4 W672922. W690225.0 W701518.3 W
MASSACHUSETTS
HITWESHITHITWESHIT
275215
1806088
DUXBURY, MAFALL RIVER, MAGLOUCESTER', MAHARVARD, MAWESTON, MAWESTFORD, MA
DUXFLRGLOHRVWESWFK
420407. N414300.0 N423825. N423023. N422304.9 N423638. N
704604. w710717.5 w704338. W713330. W711919.5 W712926. W
NEW HAMPSHIRE
WESWGEMITWGEWESWGEWGEMITMITWGEMIT
472290
24300180215400280659215220
BNHCSNH*DNHGHNH*HNHLANH*MBNH*ONHPNHWBNH*WNB
443526. N434857.6 N430721. N435212.0 N434219. N433527.6 N434337.2 N431645. N430539. N433614.4 N435206. N
711523. W712743.2 W705341.3 W710708.4 W721708. W712924.0 W711919.2 W713020. W720809. W710556.4 W712359. W
BERLIN, NHCENTER SANDWICH, NHDURHAM, NHGOE HILL, NHHANOVER, NHLACONIA, NHMOULTON BOROUGH , NHOAKHILL, CONCORD, NHPITCHER MOUNTAIN, h"HWOLFEBORO, NHWHITEFACE. NH
1857293613195004290848414954
5 NN
5 N7 N8 N
NN
Page 2 of 3
TABLE ILIST OF OPERATING SEISMIC STATIONS BY STATE
OCTOBER - DECEMBER 1976
LATITUDE LONGITUDE ELEVATIONDGMNSEC DGMNSEC METERS
STAID OPERATOR
NEW JERSEY
410103.6 N410515.0 N410026.4 N
360-363
229
GREENPOND, NJOGDENSBURG, NJP AHAQUARRY, NJ
LDOLDOLDO
GPDOGDPQN
NEW YORK
ADNALFALXAPH
435000.0 N421331.2 N441921.0 N435028.8 N
137671122564
ADAMS, NY LDOALFRED , NY LDOALEXANDER BAY, NY LDOAIRPORT HANGAR, BLUE MIN, LDO
NY742243.8 W742656.4 W742736.0 W781007.8 W742854.6 W753053.4 W781424.0 W743145.6 W735433.0 W733318.0 W745858.2 W741320.0 W743236.0 W740909.0 W735134.2 W733508.4 W
LDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDOLDO
BGR
CLY
CTR
DNY
EGN
HNY
~IRH
OCN
PAL
PNY
PTR
TBR
UWL
WND
WNY
WPR
444931.8 N435104.8 N435227.0 N425010.8 N435134.1 N424954.6 N425021.0 N435305.4 N410015.0 N445003.0 N443421.0 N410830.0 N435016.2 N422015.0 N442327.6 N411516.8 N
329579585381549500448701
91177238261561602598152
BANGOR, NYCRYSTAL LAKE, NYCASTLE ROCK, NYDERSAM, NYEAGLE'S NEST, NYHAMIL TON, NYMERCHANTS HILL, NYOVERCASTLE ROCK, NYPALISADES, NYPLATTSBURG, NYPOTSDAM, NYTABLEROCK, NYUTOWANA LAKE, NYWINDHAM, NYWILMINGTON, NYWARD POUND RIDGE, NY
CONCONCONCONCONCONCONCONCONCONCONCONCON
BLM*CHR*DBM*DPL*GOB*GSC*IPS*OSB*SNP*SPS*SRM*STL*WGL*
411947.411229.411740.411510.411946.411558.411602.412137.411427.411807.411342.411119.412132.
NNNNNNNNNNNNN
735718.741316.735830.735439.735519.740014.735654.735526.735816.735326.740050.740013.735358.
wwwwwwwwwwwww
134183
2767
150110
BLUM, NYCALLS HOLLOW ROAD, NYDUNDERBURG MOUNTAIN, NYDELLI PAOLI, NYGOBBELET, NYGIRL SCOUT CAMP, NY
21230
168165125152
OSBORN, NYSTONEY POINT, NYST. PETERS SCHOOL, NYSCHERMAN, NYSTILES, NYWEGEL, NY
742739.0 W743545.0 W750509.0 W
760710.8 W774749.8 W755540.8 W742949.2 W
Page 3 of 3
TABLE ILIST OF OPERATING SEISMIC STATIONS BY STATE
OCTOBER - DECEMBER 1976
LATITUDE LONGITUDE ELEVATIONDGMNS EC DGMNS EC METERS
STAID OPERATOR
PENNSYLVANIA
8020 W7959 W7622 W7508 W775154.0 W
PSUPSUPSUPSUPSU
BVRERIMLVPHISCP
4042 N4208 N395930. N4001 N404142.0 N 352
BEAVER, PAERIE, PAMILLERSVILLE, PAABINGTON, PASTATE COLLEGE, PA
RHODE ISLAND
40 UCTLAF 413403. N 713024. w LAFAYETTE, RI
VERMONT
LDOLDOLDOLDOLDO
ALVBRVCOVESJMDV
4444444443
730248.723600.730845.730154.731052.
271402
85
ST. ALBANS, VTBARRE , VTCOLCHESTER, VTESSEX JUNCTION, VTMIDDLEBURY, VT134
.STATION CODES NOT SUBMITTED TO OR APPROVED BY THE NEIC.
OPERATOR. CODE
CON -DGS -LDO -KIT -PSU -UCT -WES -\iGE -
CONSOLIDATED-EDISON, INDIAN POINT, NEW YORKDELAWARE GEOLOGICAL SURVEYLAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITYMASSACHUSETTS INSTITUTE OF TECHNOLOGYPENNSYLVANIA STATE UNIVERSITYUNIVERSITY OF CONNECTICUTWESTON OBSERVATORY OF BOSTON COLLEGEWESTON GEOPHYSICAL ENGINEERS
47~12~34~31]59~
~o.10.19.1L2..7.
NN
INNN
wwwW
2. W
TABLE II
EPICENTER LISTNORTHEASTERN UNITED STATES
AND ADJACENT REGIONSOCTOBER - DECEMBER 1976
DEPTHKM
H-TIME (UTC)DR !om SEt
RMSSEt
MAGNITUDESOURCE LATITUDEDEG
LONGITUDEDEG
BLUE MOUNTAIN LAKE, NEW YORK02 59 43.86 N 74.48 W
01 OCT*LDO MBN < 1
NEW YORK-CANADA BORDER07 OS 03.2 44.99 N
03 OCT*LDO MBN-2.2 014.14 W O.17SEC
03 OCT*LDO
BLUE ~roUNTAIN LAKE, NEW YORK10 16 43.86 N 74.48 W MBN < 1
04 OCT*LDO
BLUE .fOUNTAIN LAKE, NEW YORK15 55 43.86 N 74.48 W MBN < 1
05 OCT*LDO
BLUE MOUNTAIN LAKE. NEW YORK03 41 43.86 N 74.48 W MBN < 1
05 OCT*WES
DOVER-FOXCROFT, MAINE08 23 04.5 45.19 N MBN-l.7 OR69.15 W O.70SEC
NEAR HILLINOCKET. MAINE11 08 54.2 45.62 N
06 OCT*WES MBN-2.1 OR69.09 w O.60SEC
06 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 31 43.86 N 74.48 W MBN < 1
01 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK12 59 43.86 N 74.48 W MBN < 1
07 OCT*LDO MBN <1
BLUE MOUNTAIN LAKE, NEW YORK13 07 43.86 N 74.48 W
10 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK15 22 43.86 N 74.48 W MBN < 1
12 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK16 25 43.86 N 74.48 W MBN < 1
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK05 40 43.86 N 74.48 W MBN < 1
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK12 43 43.86 N 74.48 W MBN < 1
BLUE MOUNTAIN LAKE. NEW YORK13 31 43.86 N 74.48 W
17 OCT*LDO MBN < 1
PAGE 2 OF 6TABLE II CONTINUED
17 OCT*LOO MBN < 1
BLUE MOUNTAIN LAKE, NEW YORK13 33 43.86N 74.48W
17 OCT*LDO ~..BN < 1
BLUE MOUNTAIN LAKE, NEW YORK13 36 43.86W 74.48W
17 OCT*LDO MBN < 1
BLUE MOUNTAIN LAKE, NEW YORK15 22 43.86N 74.48W
20 OCT*LDO
LYON MOUNTAIN, NEW YORK23 42 08.4 44.69N 1O.12SEC MBN=2.873.89W
SAINT SIMEON, QUEBEC (FELT:LA ~mLBAIE TO MADAWASKA,~~INE)20 58 18.0 47.79N 69.79W 0.9 SEC MBN=4.420 58 17.1 47.85N 69.79W 0.66SEC
23 OCT*EPB*WES OR
23 OCT*EPB*WES
SAINT SIMEON, QUEBEC AFTERSHOCK21 22 47.79N 69.79W21 22 37.5 47.81N 69.75W MBN=1.9 ORO.14SEC
23 OCT*EPB*WES MBN=3.0 OR
SAINT SIMEON, QUEBEC AFTERSHOCK21 23 47.79N 69.79W21 23 07.8 47.83N 69.68W O.48SEC
23 OCT*EPB*WES
SAINT SIMEON,QUEBEC AFTERSHOCK21 53 47.79N 69.79W21 53 13.2 47.83N 69.70W O.34SEC MBN=1.6 OR
23 OCT*WES
SAINT SIMEON,QUEBEC AFTERSHOCK22 07 09.0 47.85N 69.59W MBN=1.8O.O8SEC OR
24 OCT*WES
SAINT SIMEON,QUEBEC AFTERSHOCK01 59 09.4 47.83N 69.70W MBN=1.6O.18SEC OR
24 OCT*EPB*WES
SAINT SIMEON, QUEBEC AFTERSHOCK10 49 45.0 47.82N 69.84W10 49 46.3 47.78N 69.81W
0.0 SEC0.65SEC
MBN=3.6MBN=3.3 OR
24 OCT*EPB*WES MBN=1.8O.17SEC OR
SAINT SIMEON, QUEBEC AFTERSHOCK11 22 47.79N 69.79W11 22 06.4 47.79N 69.76W
24 OCT*WES
SAINT SIMEON, QUEBEC AFTERSHOCK18 11 19.1 47.77N 69.89W O.19SEC MBN=2.0 OR
27 OCT*EPB*WES MBN=1.7 ORO.79SEC
SAINT SIMEON, QUEBEC AFTERSHOCK02 23 47.79N 69.79W02 23 19.4 47.75N 69.79W
3 OF'J'ABLE II CONTINUED PAGE 6
27 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK05 57 43.86N 74.48W < 1~N
27 OCT*LDO
BLUE MOUNTAIN LAKE I NEW YORK06 49 43.86N 74.48W < 1MBN
27 OCT*LOO
BLUE MOUNTAIN LAKE,NEW YORK10 34 43.86N 74.48W < 1MBN
28 OCT*LDO
DENVILLE,NEW JERSEY FORESHOCK01 10 40.89N 74.49W MBN < 1
28 OCT*LDO
DENVILLE ,NEW JERSEY01 13 31.7 40.89N O. 07SEC MBN < 174.49W 0
28 OCT*LDO
DENVILLE,NEW JERSEY06 47 40.89N 74.49W MBN < 1
30 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK18 07 43.86N 74.48W MBN < 1
31 OCT*WES
SAINT SIMEON,QUEBEC AFTERSHOCK04 23 13.7 47.80N 69.85W O.SlSEC MBN=2.2 OR
01 NOV*WES
SAINT SIMEON,QUEBEC AFTERSHOCK17 51 26.1 47.S2N 69.5SW O.36SEC MBN=2.3 OR
OJ NOV*LOO
BLUE MOUNTAIN LAKE, NEW YORK17 40 43.86N 74.48W MBN < 1
OS NOV.WES
SAINT SIMEON,QUEBEC AFTERSHOCK11 40 24.8 47.79N 69.72W O.23SEC MBN=2.2 OR
OS NOV*LDO
RAQUETTE LAKE, NEW YORK18 07 48.7 43.79N 74.59W O.lOSEC 8.7
08 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK17 36 43.86N 74.48W MBN < 1
10 NOV*WES
SAINT SIMEON, QUEBEC AFTERSHOCK04 05 06.1 47.78N 70.22W O.27SEC MBN=2.1 OR
14 NOV*LOO
BLUE MOUNTAIN LAKE, NEW YORK06 05 43.86N 74.48W MBN < 1
15 NOV*WES
LACONIA, NEW HAMPSHIRE15 20 37.5 43.56N 71.62W O.45SEC OR
17 NOV*LOO
BLUE MOUNTAIN LAKE,NEW YORK07 07 43.86N 74.48W <1MBN
17 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK11 51 43.86N 74.48W <1MBN
6TABLE II CONTINUED PAGE 4 OF
19 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK~8 15 ~3.86N 74.48W < 1.MEN
22 NOV*LDO
NORTH EASTERN YONKERS,NEW YORK(FELT)04 43 13.4 41.00N 73.86W 0.13SEC MBN=1.9 5
22 NOV*LDO
BLUE MOUNTAIN LAKE,NEW YORK06 28 43.86N 74.48W MBN <
22 NOV.WES
LACONIA,NEW H~WSHIRE2249 38.0 43.S4N 71.60W O.18SEC MBN=1.8 OR
23 NOV*LDO
BLUE MOUNTAIN LAKE,NEW YORK18 57 43.86N 74.48W MBN < 1
24 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK10 40 43.86N 74.48W < 1MBN
25 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK01 14 43.86N 74.48W < 1MEN
25 NOV*LDO
BLUE MOUNTAIN LAKE I NEW YORK05 01 43.86N 74.48W < 1MBN
25 NOV*LDO
BLUE MOUNTAIN LAKE I NEW YORK14 29 43.86N 74.48W MBN < 1
26 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK06 59 02 43.86N 74.48W < 1MBN
26 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK06 59 41 43.86N 74.48W MBN < 1
28 NOV*LDO
BLUE MOUNTAIN LAKE ,NEW YORK21 30 43.86N 74.48W < 1MBN
28 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 58 43.86N 14.48W < 1MBN
01 DEC*LDO
BETWEEN POTSDAM AND MAS SENA, NEW YORK18 51 44.0 44.89N 74.82W 0.21SEC MBN=2.1 0
03 DEC*LDO
NEAR OGDENSBURG, NEW YORK08 13 18.7 44.77N 75.44W 4.4O.28SEC MBN=1.6
05 DEC*LDO
SCHOOLEY'S MOUNTAIN,NEW JERSEY16 32 06.9 40.77N 74.76W
(FELT)O.O7SEC MBN=1.8 3.4
07 DEC*LDO
SCHOOLEY'S MOUNTAIN,NEW JERSEY04 55 07.2 40.77N 74.76W 5.1O.OSSEC MBN=1.7
';l'ABLE II CONTINUED 6PAGE 5 OF
07 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK~5 13 43.86N 74.48W MBN < 1
07 DEC*LOO
SOUTH OF POTSDAM, NEW YORK23 59 30.2 44.43N 75.07W O.llSEC MBN=1.5 2.4
09 DEC*LOO
BLUE MOUNTAIN LAKE, NEW YORK04 06 43.86N 74.48W MBN < 1
11 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK00 44 43.86N 74.48W MBN < 1
14 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK10 20 43.86N 74.48W MBN < 1
14 DEC*WES
NEAR DICKEY,MAINE (HEARD)12 23 35.4 47.10N 69.13W O.OSSEC OR
15 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 09 43.86N 74.48W MBN < 1
16 DEC*WES
NEAR DICKEY, MAINE17 26 12.4 47.12N 69.17W O.O9SEC OR
17 DEC*UCT
SOUTHEASTERN CONNECTICUT (HEARD)10 30 51.6 41.41N 12.01W 0.215EC MBN=2.2 OR
23 DEC*WES
BRISTOL, NEW BRUNSWICK09 25 06.8 46.58N 67.4SW O.21SEC MBN=2.4 OR
25 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK02 44 43.86N 74.48W MBN < 1
25 DEC*LOO
BLUE ~OUNTAIN LAKE, NEW YORK02 47 43.86N 74.48W MBN < 1
26 DEC*LDO
BLUE MOUNTAIN LAKE I NEW YORK02 13 43.86N 74.48W MBN < 1
29 DEC*LDO
NEAR BURLINGTON I VERMONT00 02 54.7 44.42N 73.14W O.24SEC MBN=1.7 1
30 DEC*LOO
BLUE MOUNTAIN LAKE,NEW YORK07 06 43.86N 74.48W MBN < 1
30 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK22 01 43.86N 74.48W MBN < 1
31 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORKOS 36 43.86N 74.4SW MBN < 1
PAGE 6 OF 6TABLE II CONTINUED
BLUE MOUNTAIN LAKE, NEW YORK21 26 43.86N 74.48W
31 DEC*LOO MBN < 1
*SOURCEDGS - DELAWARE GEOLOGICAL SURVEYEPB - EARTH PHYSICS BRANCH, DEPT. OF ENERGY, MINES AND RESOURCES, CANADALDO - LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITYHIT - MASSACHUSETTS INSTITUTE OF TECHNOLOGYPSU - PENNSYLVANIA STATE UNIVERSITYUCT - UNIVERSITY OF CONNECTICUTWES - WESTON OBSERVATORY OF BOSTON COLLEGE
'l'ABLE III
EARTHQUAKE DATA LISTNORTHEASTERN UNITED STATES
AND ADJACENT REGIONSOCTOBER - DECEMBER 1976
DEPTHKM
RMSSEC
MAGNITUDESOURCE H-TIME(UTC)HR MN SEC
LATITUDE LONGITUDEDEG DEG
01 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK02 59 43.86N 74.48W MBN
03 OCT NEW YORK-CANADA BORDER*LDO 07 05 03.2 44.99N 74.74W
PTN IP D 07 05 11.2 50KMPTN ES 07 05 17.4 50KMWNY EP 07 05 18.2 96KMWNY ES 07 05 29.9 96KMALX EP 07 05 22.0 120KMALX ES 07 05 35.9 120KMCTR EP 07 05 22.6 126KMCTR ES 07 05 37.9 126KM
MBN=2.2 0O.17SEC
03 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK10 16 43.86N 74.48W
.< 1MBN
04 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK15 55 43.86N 74.48W < 1MBN
05 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK03 41 43.86N 74.48W < 1MBN
05 OCT DOVER-FOXCROFT,MAINE*WES 08 23 04.5 4s.19N 69.1sW
MIM EPG 08 23 05.4 10KMMIM ESG 08 23 07.7 10KMTRM EP* 08 23 26.2 136KMTRM EPG 08 23 27.4 136KMTRM EPN 08 23 28.4 136KMTRM ES* 08 23 41.8 136KMEMM ESN 08 23 43.6 140KMBNH ESG 08 23 55.4 180KMCBM ESG 08 24 03.8 209KMWNH EP 08 23 41.7 232KMWNH ES 08 24 08.3 232KM
MBN=1.7 ORO.70SEC
0.8 SEC MBN=1.7413MU
0.7 SEC MBN=1.70lOMU
06 OCT NEAR MILLINOCKET,MAINE*WES 11 08 54.2 45.62N 69.0~
MIM EPG 11 09 01.1 41KMMIM ESG 11 09 05.2 41KMEMM EPG 11 09 20.1 159KM 39MUEMM ESG 11 09 39.7 159KMD3A EPN 11 09 20.2 164KM
O.60SEC MBN=2.1 OR
0.8 SEC MBN=2.28
PAGE 2 OF 13CONTINUEDTABLE III
MAGNITUDE DEPTHSOURCE H-TIME(UTC) LATITUDE LONGITUDE RMS
CBMCBMD2AD2ATRMTRMTRMBNHBNHWNH
11 09 20.811 09 42.011 09 21.111 09 41.311 09 21.511 09 22.911 09 45.311 09 27.211 09 53.211 10 12.4
164KM164KM169KM169KM177KM177KM177KM20SKM20SKM267KM
MBN=1.8413MU 0.8 SEC
06 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 31 43.86N 74.48W <1MBN
07 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK12 59 43.86N 74.48W <1MBN
07 OCT*LOO
BLUE MOUNTAIN LAKE,NEW YORK13 07 43.86N 74.48W <1MBN
10 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK15 22 43.86N 74.48W <1MBN
12 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK16 25 43.86N 74.48W <1MBN
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK05 40 43.86N 74.48W <1MBN
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK12 43 43.86N 74.48W <1MBN
17 OCT*LOO
BLUE MOUNTAIN LAKE ,NEW YORK13 31 43.86N 74.48W <1MBN
17 OCT*LDO
BLUE MOUNTAIN LAKE,NEW YORK13 33 43.86N 74.48W <1MBN
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK13 36 43.86N 74.48W <1MBN
17 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK15 22 43.86N 74.48W <1MBN
20 OCT*LOO
WNY IPESJ IPPTN IPMDV EP
LYON MOUNTAIN, NEW YORK23 42 08.4 44.69N 73.89WC 23 42 13.9 33KMC 23 42 19.5 100KMC 23 42 22.0 88KM
23 42 23.1 95KM
O.12SEC MBN=2.8 1
EPNESGEPNESGEPNEPGESGEPGESGE (8)
CONTINUED PAGE 3 OF 13TABLE III
SOURCE H-TIME(UTC) LATITUQE LONGITUDE RMS MAGNITUDE DEPTH
CTR IP D 23 42 24.3CLY IP C 23 42 24.6OCN IP C 23 42 24.7APH EP 23 42 25.0BRV IP C 23 42 26.5ALX IP D 23 42 34.4
lOlKMlO3KMlO3KMlO6KM11OKM167KM
23 OCT ST.SIMEON,QUEBEC(FELT:LA MALBAIE TO MADAWASKA,ME)*EPB 20 58 18.0 47.79N 69.79W 0.9 SEC MBN=4.4*WES 20 58 17.1 47.85N 69.79W 0.66SEC
D2A EpG 20 58 33.1 94KMD3A EPG 20 58 33.6 97KMD3A ESG 20 58 44.4 97KMDlA EPG 20 58 34.4 103KMCBM EPN 20 58 43.1 162KMMIM EPN 20 58 59.2 296KMBNH EPN 20 59 10.4 380KMBNH EPG 20 59 19.7 380KMEMM EPN 20 59 09.5 389KMTRM EPN 20 59 11.8 401KMWNH EPN 20 59 17.2 460KMESJ EPN 20 59 17.8 447KMBRV EPN 20 59 19.7 460KMBRV ESN 21 00 06.7 460KMBRV ESG 21 00 22.7 460KMWNY EPN 20 59 23.6 497KMWNY ESN 21 00 17.0 497KMWNY ESG 21 00 33.5 497KMDNH EPN 20 59 28.2 533KMPTN EPN 20 59 30.0 542KMPTN ESN 21 00 24.2 542KMPTN ESG 21 00 47.4 542KMPNH EPN 20 59 31.4 560KMOCN EPN 20 59 33.5 574KMCLY EPN 20 59 34.2 573KMCLY EPG 20 59 51.3 573KMCLY ESN 21 00 31.9 573KMCLY ESG 21 00 52.1 573KMCTR EPN 20 59 34.3 572KMCTR ESN 21 00 35.2 572KMCTR ESG 21 00 50.5 572KMGLO EPN 20 59 34.4 584KMWFM EPN 20 59 36.7 598KMHRV EPN 20 59 38.0 610KM
OR
SAINT SIMEON,QUEBEC (AFTERSHOCK)21 22 47.79N 69.79W21 22 37.5 47.81N 69.75W 0.14SEC
21 22 52.0 88KM21 23 02.8 88KM21 22 52.5 92KM21 23 03.5 92KM
23 OCT*EPB*WES
D2A EPGD2A ESGD3A EPGD3A ESG
MBN=1.9 OR
TABLE III CONTINUED PAGE 4 OF 13
MAGNITUDE DEPTHSOURCE H-TIME(UTC) LATITUDE LONGITUDE RMS
CIA EPGCIA ESGCBM ESN
97KM97KM
157KM MBN=1.913MU 0.2 SEC
SAINT SIMEON,QUEBEC (AFTERSHOCK)21 23 47.79N 69.79W21 23 07.8 47.83N 69.68W 0.48SEC
21 23 22.2 88KM21 23 23.1 88KM21 23 22.7 92KM21 23 23.5 97KM21 23 35.4 97KM21 23 32.3 155KM 55MU 0.1 SEC21 23 32.8 155KM21 23 51.2 155KM21 24 19.4 292KM 14MU 0.2 SEC21 24 44.0 400KM21 24 09.8 460KM2] Z418.3 532KM
MBN=3.0 OR
23 OCT*EPB*WES
D2A EPGD2A EP*D3A EPGDIA EPGDIA ESGCBM EPNCBM EP*CBM ESNMIM ESNTRM ESNWNH EPNDNH EPN
MBN=3.32
MBN=2.67
SAINT SIMEON,QUEBEC (AFTERSHOCK)21 53 47.79N 69.79W21 53 13.2 47.83N 69.70W 0.34SEC
21 53 27.4 88KM21 53 28.3 92KM21 53 39.8 92KM21 53 29.6 97KM21 53 40.5 97KM21 53 56.5 156KM 2MU 0.2 SEC
MBN=1.6 OR
23 OCT*EPB*WES
D2A EPGD3A EPGD3A ESGDlA EPGDlA ESGCBM ESN MBN=1.61
SAINT SIMEON, QUEBEC (AFTERSHOCK)22 07 09.0 47.85N 69.59W 0.08SEC
22 07 23.3 87KM22 07 33.8 87KM22 07 23.9 91KM22 07 34.7 91KM22 07 36.3 96KM22 07 51.2 151KM 2MU 0.2 SEC
MBN=1.8 OR23 OCT*WES
D2A EPGD2A ESGD3A EPGD3A ESGDlA ESGCBM ESN MBN=1.77
SAINT SIMEON,QUEBEC (AFTERSHOCK)01 59 09.4 47.83N 69.70W 0.18SEC
01 59 23.7 88RM01 59 35.7 92RM01 59 25.5 97RM01 59 36.8 97KM01 59 52.6 156KM 2MU 0.2 SEC
MBN=1.6 OR24 OCT*WES
D2A EPGD3A ESGDlA EPGDIA ESGCBM ESN MBN=1.58
21 22 53.521 23 04.921 23 21.0
PAGE 5 OF 13.TABLE III CONTINUED
RMS MAGN I TUDE DEPTHSOURCE ij-TIME (UTC) LATITUDE LONGITUDE
24 OCT*EPB*WES
D2AD3ADIADIACBMCBMCBMMIMMIMBNHEMMEMMEMMTRMWNHDNHDNHGLOGLOFLR
MBN=3.6MBN=3.3
SAINT SIMEON,QUEBEC (AFTERSHOCK)10 49 45.0 47.82N 69.84W 0.0 SEC10 49 46.3 47.78N 69.81W 0.65SEC
EPG 10 50 01.1 87KMEPG 10 50 01.6 90KM~G 10 50 02.4 95KMESG 10 50 13.8 95KMEPN 10 50 11.1 158KMEP* 10 50 11.7 158KMESN 10 50 29.8 158KMEPN 10 50 27.3 287KM 3~U 0.2 SECES* 10 51 04.2 287KMEPN 10 50 38.5 371KMEPN 10 50 38.1 382KM 102MU 0.3 SECESN 10 51 17.5 382KMES* 10 51 30.6 382KMESG 10 51 38.9 392KMEPN 10 50 47.8 451KMEPN 10 50 57.0 524KMEP 10 51 00.3 524KMEPN 10 51 02.7 575KMESN 10 51 59.6 575KMESG 10 52 59.0 681KM
OR
MEN=3.l3
MBN=3.46
24 OCT*EPB*WES
D2AD2AD3AD3AD1ADlACBM
SAINT SIMEON,QUEBEC (AFTERSHOCK)11 22 47.79N 69.79W11 22 06.4 47.79N 69.76W 0.17SEC
EPG 11 22 20.4 86KMESG 11 22 30.6 86KMEPG 11 22 21.3 90KMESG 11 22 31.9 90KMEPG 11 22 21.9 95KMESG 11 22 33.6 95KMESN 11 22 49.7 156KM
MBN=1.8 OR
MBN=1.844MU 0.2 SEC
SAINT SIMEON ,QUEBEC (AFTERSHOCK)18 11 19.1 47.77N 69.89W 0.19SEC
EPG 18 11 34.1 91KMESG 18 11 45.1 91KMEPG 18 11 34.5 94KMESG 18 11 45.7 94KMEPG 18 11 35.6 100KMESG 18 11 47.1 100KMEPN 18 11 44.7 163KM 4MUESN 18 12 04.1 163KM
24 OCT*WES
D2AD2AD3AD3ADIADlACBMCBM
MBN=2.0 OR
0.2 SEC MBN=2.02
PAGE 6 OF 13.TABLE III CONTINUED
21 OCT. SAINT SI~mON,QUEBEC (AFTERSHOCK)*EPB 02 23 41.19N 69.19W*WES 02 23 19.4- 41.75N 69.79W 0.19SEC
D2A EPG 02 23 33.1 84KMD3A EPG 02 23 33.8 87KMD3A ESG 02 23 45.3 87KMD1A EPG 02 23 34.8 93KMAGM EPG 02 23 33.9 94KMAGM ESG 02 23 44.9 94KMCBM EPN 02 23 44.3 156KM 3MU 0.2 SECCBM ESN 02 24 03.2 156KM
MBN=1.7 OR
MBN=1.72
21 OCT*LDO
BLUE MOUNTAIN LAKE, NEW YORK05 57 43.86N 74.48W MBN < 1
27 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK06 49 43.86N 74.48W MEN < 1
27 OCT*LOO
BLUE MOUNTAIN LAKE,NEW YORK10 34 43.86N 74.48W MBN < 1
28 OCT*LOO
DENVILLE ,NEW JERSEY0110 40.89N
(FORESHOCK)74.49W MBN < 1
28 OCT OENVILLE,NEW JERSEY*LDO 01 13 31.7 40.89N 74.49W
GPO IPGO 01 13 34.0 14KMGPO ESG 01 13 35.7 14KMTBR EPG 01 13 37.8 36KMTBR ESG 01 13 42.0 36KMSRM EPG 01 13 40.8 55KMSRM ESG 01 13 47.3 55KMBLM ESG 01 13 50.7 66KM
O.O1SEC MBN < 1 0
28 OCT*LOO
(AFTERSHOCK)74.49W
DENVILLE,NEW JERSEY06 47 40.99N MBN < 1
30 OCT*LOO
BLUE MOUNTAIN LAKE, NEW YORK18 07 43.86N 74.48W MBN < 1
31 OCT SAINT SIMEON,QUEBEC (AFTERSHOCK)*WES 04 23 13.7 47.80N 69.85W 0.51SEC
D2A EPG 04 23 28.5 91KMD2A ESG 04 23 39.1 91KMD3A EPG 04 23 28.8 95KMD1A EPG 04 23 29.8 100KMD1A ES* 04 23 43.0 100KMAGM EPG 04 23 30.6 102KMCBM EPG 04 23 41.0 163KMTRM EPG 04 24 18.9 395KMMIM 291KM
MBN=2.2 OR
MBN=2.30MBN=2.38MBN=2.07
7KU 0.1 SECSKU 0.2 SEC2KU 0.1 SEC
PAGE 7 OF 13TABLE III CONTINUED
01 NOV SAINT SIMEON,QUEBEC (AFTERSHOCK)*WES 17'51 26~1 47.82N 69.58W 0.36SEC
D2A EPG 17 51 39.8 83KMD2A ESG 17 51 50.2 83KMD3A EPG 17 51 40.4 87KMDlA EPG 17 51 40.9 92KMD1A ESG 17 51 52.4 92KMAGM EPG 17 51 41.0 92KMAGM ESG 17 51 51.5 92KMCBM EPN 17 51 50.2 148KM 12MU 0.2 SECCBM ESN 17 52 07.4 148KMMIM 289KM 3MU 0.2 SEC
MBN=2.3 OR
MBN=2.46
MBN=2.13
03 NOV*LOO
BLUE MOUNTAIN LAKE, NEW YORK17 40 43.86N 74.48W <1MBN
05 NOV SAINT SIMEON,QUEBEC (AFTERSHOCK)*WES 11 40 24.8 47.79N 69.72W 0.23SEC
D2A EPG 11 40 38.8 8sKMD2A ESG 11 40 49.4 8sKMD3A EPG 11 40 39.2 89KMD3A ESG 11 40 49.7 89KMD1A EPG 11 40 40.4 94KMD1A ESG 11 40 51.8 94KMAGM EPG 11 40 40.3 9sKMAGM ESG 11 40 51.5 9sKMCBM EPN 11 40 49.7 ls4KM 8MU 0.2 SECCBM ESN 11 41 07.6 154KMMIM 288KM
MBN=2.2 OR
MBN=2.27
3MU 0.2 SEC MBN=2.0S
05 NOV RAQUETTE LAKE,NEW YORK*LDO 18 07 48.7 43.79N 74.59W
OCN IPGD 18 07 50.7 12KMOCN ESG 18 07 52.6 12KMCLY IPGD 18 07 51.2 13KMCLY ESG 18 07 52.8 13KMCTR IPGD 18 07 51.2 14KMCTR ESG 18 07 52.9 14KM
8.7O.10SEC
08 NOV*LDO
BLUE MOUNTAIN LAKE,NEW YORK17 36 43.86N 74.48W <1MBN
10 NOV SAINT SIMEON,QUEBEC (AFTERSHOCK)*WES 04 05 06.1 47.78N 70.22W 0.27SEC
D2A ESG 04 05 37.1 108KMD3A EPG 04 OS" 24.0 111KMD3A ESG 04 05 37.4 111KMD1A EPG 04 05 24.8 117KMD1A ESG 04 05 38.7 117KMAGM EPG 04 05 25.9 119KMAGM ESG 04 05 39.7 119KMCBM ESG 04 05 58.5 18sKM 6MU 0.3 SECMIM 296KM 3MU 0.2 SECTRM 391KM 4MU 0.2 SEC
MBN=2.1 OR
MBN=2.05MBN=2.11MBN=2.23
PAGE 8 OF 13TABLE III CONTINUED
14 NOV*LOO
BLUE MOUNTAIN.LAKE,NEW YORK06 05 43.86N 74.48W MBN < 1
15 NOV LACONIA,NEW HAMPSHIRE.WES 15 20 31.5 43.56N 11.62W
MBNHEPG 15 20 42.4 31KMMBNHESG 15 20 46.2 31KMWNH EPG 15 20 42.4 39KMCSNHgPG 15 20 42.8 32KMCSNHESG 15 20 46.8 32KMGHNHEPG 15 20 46.2 54KMGHNHESG 15 20 52.6 54KMHNH EPG 15 20 46.5 56KMHNH ESG 15 20 53.0 56KMPNH EPG 15 20 41.5 66KMDNH ESG 15 20 51.5 11KMBNH ESG 15 21 11.1 118KMHRV ESG 15 21 09.2 l11KMWES EPG 15 21 00.0 133KMWES ESG 15 21 14.5 133KMTRM EPN 15 20 58.9. 135KMTRM ESG 15 21 14.8 135KM
O.4SSEC OR
BLUE MOUNTAIN LAKE, NEW YORK07 07 43.86N 74.48W
17 NOV*LDO MBN < 1
17 NOV*LOO
BLUE MOUNTAIN LAKE, NEW YORK11 51 43.86N 74.48W MBN < 1
19 NOV*LOO
BLUE MOUNTAIN LAKE, NEW YORK18 15 43.86N 74.48W MBN < 1
22 NOV NORTH EASTERN YONKERS,NEW YORK (FELT)*LDO 04 43 13.4 41.00N 73.86W 0.13SEC
PAL IPGC 04 43 14.5 4KMPAL ESG 04 43 15.5 4KMSNP IPGC 04 43 18.3 28KMSNP ESG 04 43 21.8 28KMDPL IPGD 04 43 18.3 28KMDPL ESG 04 43 21.8 28KMIPS IPGC 04 43 18.6 31KMIPS ESG 04 43 22.4 31KMSPS IPGC 04 43 19.1 34KMSPS ESG 04 43 23.3 34KMDBM EPG 04 43 19.2 34KMDBM ESG 04 43.23.4 34KMTBR EPGX 04 43 19.3 34KMTBR ESGX 04 43 23.6 34KMGOB IPGC 04 43 19.5 37KMGOB ESG 04 43 24.5 37KMWPR EPG 04 43 19.6 36KMWPR ESG 04 43 23.8 36KMGPD IPGD 04 43 21.7 50KMGPD ESG 04 43 27.8 50KM.BPT EPGX 04 43 22.8 57KMBPT ESG 04 43 29.7 57KM
MBN=1.9 5
PAGE 9 OFTABLE III CONTINUED 13
BCT JPGC ,04 43 24.4BCT EgG 04 43 32.7ECT IPGC 04 43 29.7ECT EgG 04 43 41.3
68KM6'8KM
lOOKMlOOKM
22 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK06 28 43.86N 74.48W MBN < 1
22 NOV LACONIA,NEW HAMPSHIRE*WES 22 49 38.0 43.54N 71.60W*MIT 43.53N 71.58W
ONH EPG 22 49 42.8MBNHEPG 22 49 43.0MBNHESG 22 49 46.8CSNHEPG 22 49 43.4CSNHESG 22 49 47.3WBNHEPG 22 49 44.4WBNHESG 22 49 49.6WNH EPG 22 49 44.6WNH ESG 22 49 49.2GHNHEPG 22 49 46.8GHNHESG 22 49 53.1HNH EPG 22 49 47.6HNH ESG 22 49 54.4PNH EPG 22 49 48.7PNH ESG 22 49 56.6DNH EPG 22 49 50.3DNH ESG 22 49 58.3WFM EP 22 49 56.0WFM EP 22 50 08.0HRV EP 22 49 58.0HRV EP 22 50 11.0BNH ES* 22 50 11.9GLO EP* 22 49 59.4GLO ES* 22 50 12.4WES EP 22 50 00.2WES ES* 22 50 14.6TRM EP* 22 50 00.1TRM ES* 22 SO 15.8MIM
O.18SEC MBN=1.8 OR
30KM30KM30KM32KM32KM41KM41KM40KM40KM53KM53KM58KM58KM66KM66KM74KM74KM
104KM104KM115KM115KM120KM123KM123KM131KM131KM134KM134KM278KM
MBN=1.855MU 0.2 SEC
MBN=1.822MU 0.2 SEC
23 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK18 57 43.86N 74.48W <1MBN
24 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK10 40 43.86N 74.48W <1MBN
25 NOV*LDO
BLUE MOUNTAIN LAKE,NEW YORK01 14 43.86N 74.48W <1MBN
25 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK05 01 43.86N 74.48W <1MBN
PAGE 10 OF 13TABLE III CONTINUED
25 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK14 29 43.86N 74.48W MBN < 1
26 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK06 59 02 43.86N 74.48W MBN < 1
26 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK06 59 41 43.86N 74.48W MBN < 1
28 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK21 30 43.86N 74.48W 1MBN <
28 NOV*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 58 43.86N 74.48W MBN < 1
01 DEC BETWEEN POTSDAM AND MASSENA,NEW YORK*LDO 18 51 44.0 44.89N 74.82W 0.21SEC
BGR EPGX 18 51 49.7 43KMBGR ESG 18 51 54.3 43KMPTN IPGD 18 51 50.7 38KMPTN ESG 18 ~1 54.6 38KMPNY IPC 18 51 59.5 100KMPNY ES 18 52 11.9 100KMALX IP C 18 52 01.0 108KMALX ES 18 52 13.9 108KMOCN IP C 18 52 01.8 114KMCTR IP C 18 52 02.1 117KMCTR ES 18 52 16.1 117KMUWL IP C 18 52 02.4 119KMEGN ES 18 52 16.5 118KMCLY ES 18 52 17.0 119KM
MBN=2.1 0
03 DEC NEAR OGDENSBURG,NEW YORK*LDO 08 13 18.7 44.77N 75.44W
PTN EPG 08 13 25.1 42KMPTN ESG 08 13 29.8 42KMALX IPGC 08 13 28.5 63KMALX ESG 08 13 35.7 63KMBGR ES 08 13 41.7 85KMADN EP 08 13 36.9 117KMADN ES 08 13 50.4 117KMCTR EP 08 13 38.5 127KMCTR ES 08 13 53.2 127KM
4.4O.28SEC MBN=1.6
(FELT)O.O7SEC
OS DEC SCHOOLEY'S MOUNTAIN,NEW JERSEY*LDO 16 32 06.9 40.77N 74.76W
GPD EPGX 16 32 13.2 37KMGPD ESG 16 32 17.7 37KMpaN EPGD 16 32 13.3 38KMpaN ESG 16 32 18.2 38KMTBR EPG 16 32 17.2 61KMTBR ESG 16 32 24.3 61KM
MBN=1.8 3.4
rAGE 11 OF 13TABLE III CONTINUED
07 DEC SCHOOLEY'S MOUNTAIN,NEW JERSEY*LDO 04 55 07.2 40.77N 74.76W 0.05SEC
GPD IPGD 04 55 13.6 37KMGPD ESG 04 55 18.0 37KMPQN IPGD 04 55 13.7 38KMPQN ESG 04 55 18.6 38KMTBR ESG 04 55 24.5 61KM
MBN=1.7 5.1
07 DEC*LDO
BLUE MOUNTAIN LAKE,NEW YORK15 13 43.86N 74.48W MBN < 1
07 DEC SOUTH OF POTSDAM, NEW YORK*LDO 23 59 30.2 44.43N 75.07W
PTN IPGD 23 59 33.0 17KMPTN ESG 23 59 35.1 17KMALX EPG 23 59 41.4 69KMALX ESG 23 59 49.0 69KMCTR EPG 23 59 42.4 79KMCTR ESG 23 59 51.6 79KM
O.llSEC MBN=1.5
09 DEC*LOO
BLUE MOUNTAIN LAKE I NEW YORK04 06 43.86N 74.48W MBN < 1
11 DEC*LDO
BLUE MOUNTAIN LAKE,NEW YORK00 44 43.86N 74.48W MBN < 1
14 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK10 20 4386N 74.48W MBN < 1
14 DEC.WES
D3A EPGD3A ESGD2A EPGDlA EPG
DICKEY MAINE (HEARD)12 23 35.4 47.10N 69.13W
12 23 36.0 3KM12 23 36.2 3KM12 23 36.0 4KM12 23 36.3 SKM
O.OSSEC
15 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK23 09 43.86N 74.48W 1MBN <
16 DEC*WES
D2A EPGD3A EPGDlA EPGAGM EPGAGM ESG
DICKEY,MAINE17 26 12.4 47.12N
17 26 12.717 26 12.817 26 13.717 26 14.417 26 15.6
69.17W2KM3KM8KM
12KM12KM
O.O9SEC OR
TABLE I II CONTINUED PAGE 12 OF 13
SOUTHEASTERN CONNECTICUT (HEARD)10 30 57.6 41.47N 72.07W 0.27SEC
10 31 00. 3 17Y,.M10 31 02.4 17KM10 31 03.8 38KM10 31 08.0 38KM10 31 04.7 43KM10 31 09.5 43KM10 31 05.2 48KM10 31 11.2 48KM10 31 09.3 72KM10 31 11.3 84KM10 31 21.5 84KM10 3114.9 102KM10 31 25.9 102KM10 31 15.7 110KM10 31 28.7 110KM10 31 17.2 119KM10 31 18.2 119KM10 31 31.1 119KM
MBN=2.2 OR17 DEC* OCT
APT EPGAPT ESGHDM EPGHDM ESGOCT EPGOCT ESGLAP EPGLAF ESGTMT EPGFLR EPGFLR ESGBPT EP*BPT ES*BCT EP*BCT ES*ECT EP*WES EPGWES ES*
23 DEC*WES
AGM EP*AGM ES*DIA EP*DlA ES*D3A EP*D3A ES*D2A EP*D2A ES*MIM EPGMIM ESGTRM
BRISTOL,NEW BRUNSWICK09 25 06.8 46.58N 67.45W
09 25 28.3 133KM09 25 44.3 133KM09 25 29.2 137KM 14MU09 25 45.1 137KM09 25 30.1 143KM09 25 47.2 143KM09 25 30.2 144KM I1MU09 25 46.8 144KM09 25 38.3 193KM 7MU09 26 01.9 193KM
193KM 7MU
O.21SEC MBN=2.4 OR
0.2 SEC MBN=2.50
0.2 SEC MBN=2.41
0.2 SEC MBN=2.21
0.2 SEC MBN=2.41
25 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK02 44 43.86N 74.48W MBN < 1
25 DEC*LOO
BLUE MOUNTAIN LAKE, NEW YORK02 47 43.86N 74.48W MBN < 1
26 DEC*LDO
BLUE MOUNTAIN LAKE ,NEW YORK02 13 43.86N 74.48W MBN < 1
.PAGE 13 OF 13TABLE III CONTINUED
29 DEC .NEAR BURLINGTON, VERMONT*LDO 00 02 54.7 44.42N 73.14W
COV IPGC 00 02 57.6 18KMCOV ESG 00 03 00.0 18KMMDV IPGD 00 03 02.1 47KMMDV ESG 00 03 07.9 47KMPNY EPG 00 03 03.4 57KMPNY ESG 00 03 10.4 57KM'mY EPG 00 03 03.5 57KMWNY ESG 00 03 10.6 57KMCTR EP 00 03 13.3 122KMCTR ES 00 03 28.1 122KM
1MBN=1.7O.24SEC
30 DEC*LOO
BLUE MOUNTAIN LAKE, NEW YORK07 06 43.86N 74.48W MBN < 1
30 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK22 01 43.86N 74.48W
31 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK08 36 43.86N 74.48W MBi~ < 1
31 DEC*LDO
BLUE MOUNTAIN LAKE, NEW YORK21 26 43.86N 74.48W MBN < 1
* SOURCEDGS - DELAWARE GEOLOGICAL SURVEYEPB - EARTH PHYSICS BRANCH,DEPT.OF ENERGY,MINES AND RESOURCES,CANADALDO - LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITYMIT - MASSACHUSETTS INSTITUTE OF TECHNOLOGYPSU - PENNSYLVANIA STATE UNIVERSITYUCT - UNIVERSITY OF CONNECTICUTWES - WESTON OBSERVATORY OF BOSTON COLLEGE
TABLE IV
SUSPECTED AND POORLY LOCATED EARTHQUAKESNORTHEASTERN UNITED STATES
AND ADJACENT REGIONSOCTOBER - DECEMBER 1976
DEPTHKM
SOURCE H-TlME(UTCHR MN SEC
LATITUDE LONGITUDEDEG DEG
RMSSEC
MAGNITUDE
L'ORIGINAL,ONTARIO12 22 16.1 45.61N 74.69W
12 22 34.4 118KM12 22 47.7 118KM12 22 35.2 124KM12 22 49.8 124KM12 22 39.4 151KM12 22 56.8 151KM12 22 42.8 173KM12 23 02.8 173KM
28 OCT*LDO
PTN EPPTN ESPNY EPPNY ESWNY EPWNY ESALX EPALX ES
29 OCT NEAR TURNER, MAINE*WES 01 57 44.2 N
TRM EPG 01 57 15.5TRM ESG 01 57 16.3
70.2 W7KM7KM
ALEXANDER BAY, NEW YORK16 57 43.4 44.36N 75.98W
16 57 43.6 6KM16 57 56.3 83KM16 58 06.7 83KM16 58 03.5 13:lKM16 58 19.7 132KM16 58 04.2 133KM16 58 20.0 133KM16 58 04.7 135KM
29 OCT*LDO
ALX EPPTN EPPTN ESAPH EPAPH 1=:SCTR EPCTR ESCLY EP
MBN=2.3 0O.49SEC
03 NOV NEAR SAINT DENIS,QUEBEC*WES 20 52 31 47.5 N 69.9 W
D3A EPG 20 52 44.9 77KMD3A ESG 20 52 53.8 77KMD1A EPG 20 52 44.5 83KMDlA ESG 20 52 55.0 83KMAGM'EPG 20 52 44.7 86KMAGM ESG 20 52 54.8 86KMMI~ ESG 20 53 46.4 265KM
O.69SEC OR
10 NOV*Ll>O
DNY EPDNY ES
ATTICA,NEW YORK19 27 42.8 N
19 27 52.219 27 52.4
78.~ W2KM2KM
PAGE 2 OF 2
15 NOV NEAR POTSDAM,NEW YORK*LDO 00 22
PTN IP C 00 22 28.7PTN ES 00 22 30.4
12 DEC*LDO
PAL EPPAL ESTBR EPTBR ESGPD EPGPD ESWPR EPWPR ES
LOWER HUDSON RiVER AREA, NEW YORK12 26 50.7 40.72N 74.01W 0.34SEC
12 26 56.5 33KM12 27 00.0 33KM12 26 58.6 50KM12 27 05.4 50KM12 26 58.9 50KM12 27 06.0 50KM12 27 02.5 69KM12 27 10.7 69KM
MBN=1.8 1
16 DEC NEAR WILMINGTON,NEW YORK*LDO 20 20 04.6 44.39N 73.79W
WNY EP 20 20 05.7 6KMPNY IP C 20 20 12.1 53KMALV EP 20 20 16.9 74KMUWL EP 20 20 17.9 86KMPTN EP 20 20 20.2 97KM
O.53SEC MBN=1.8 3.6
17 DEC NEAR SAINT HONORE,QUEBEC*WES 16 48 03 47.8 N 69.1 W
D2A EPG 16 48 14.3 69KMD2A ESG 16 48 22.4 69KMD3A EPG 16 48 15.0 74KMD3A ESG 16 48 24.4 74KMAGM EPG 16 48 15.4 75KMDIA EPG 16 48 15.6 77KMDIA ESG 16 48 24.8 77KM
O.21SEC OR
* SOURCELDO - LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITYWES - WESTON OBSERVATORY OF BOSTON COLLEGE
6.
INTERNAL DISTRIBUTION- -
.
~. Recipient
15 Dr. E.F. Chiburis
1 Mr. R.O. Ahner
1 File
EXTERNAL DISTRIBUTION
~. Recipient
25 Dr. Jerry Harbour, Dir. of Reactor Safety Research,
Nuclear Regulatory Commission
3 Ms. Mary Jinks, Chief, Central Main and Files,
Nuclear Regulatory Co~~ission
5 Rev. James W. Skehan, S.J., Weston Observatory
5 Dr. M. Nafi Toksoz, Massachusetts Institute of Technology
5 Dr. Yash P. Aggarwal, Lamont-Doherty Geological
Observatory
5 Dr. Shelton S. Alexander, Pennsylvania State University
~ 5 Dr. Ken Woodruff, Delaware Geological Survey
5 Dr. Peter Basham, Earth Physics Branch, Canada
.V"" 1 Consolidated Edison of New York
15 Dr. Paul Pomeroy, New York State Geologist and Coordinator
NEUSSN.
1..1111111...1111111111111111111. '
. ,, ,""c'", ",