The GEOFON Network and its Partner Networks(GEVN - GEOFON Extended Virtual Network )

GEOFON and GEVN Partner Stations in the Mediterranean and Africa

The SeisComP Concept of Networked Seismographs and Data Centers:

(Seismological Communication Processor)

Equipment used in GEOFON stations

STS-2 VBB seismometer

Earthdata digitizer + SeisComP box

GEOFON Station onGreenland Ice Sheet

GEOFON Station Malatya (Turkey)

SeisComP Real-Time Trace Viewer (SeisGram2K – Anthony Lomax)

GEOFON/GEVN (Near) Real-Time Network Data Processing Products

GEOFON/GEVN Automatic (Near) Real-Time Bulletin

GEOFON „Live“ Seismograms (http://www.gfz-potsdam.de/geofon/gfn_liveseis.html)Sumatra Quake with Aftershocks (26.12.2004) recorded in Malatya (Eastern Turkey)

Proposed Station Distribution for an Earthquake Monitoring Network for the Indian Ocean Region (Locations to be discussed)

Propagation of Seismic P Waves in Minutes

Estimated Propagation of Tsunami after the Sumatra Quake

Sketch of Seismic Tsunami Surveillance System

Origin Time: 00:58:50 UTC Mw=9.0

Germany: GFZ   01:10:57  mb=6.9 +12 min

Italy: INGV +16 min   mb=6.9 Germany: LED +18 min mb=7.1Switzerland: SED  +19 min   mb=6.1 Norway: NEWS +20 min   mb=5.5 NOR  +22 min   mb=6.3 France: RNS  +31 min   mb=6.4 Slovakia: BRA   +32 min   mb=6.6 Europe/ORFEUS: ODC   +65 min   mb=7.3 France: LDG  +731 min mb=5.9

International Centres (Manual Analysis)USA: NEIC +79 min   Ms=8.5 Europe/EMSC: EMSC +97 min   Mw=8.9

Pacific Tsunami Warning CenterUSA: PTWC +15 min   Mw=8.0

EMSC, NEICAutomatic Location

PTWC

Comparison of Automatic Information on the Internet after the Sumatra Quake

GEOFON Global Seismic Monitor (http://www.gfz-potsdam.de/geofon/seismon)Das Sumatra-Beben angezeigt im Internet um 26/12/2004 01:12 UTC – 13 Minuten nach Herdzeit

GEOFON Email Earthquake Information Message – Issued 12 Minutes after the Quake

Aftershock Activity After the Sumatra Quake (> 300 Events Dec 25 – Feb 10)