Seismic Monitoring in HawaiiSeismic Monitoring in Hawaii

Kanoa KoyanagiKanoa Koyanagi

NOAA Pacific Tsunami Warning CenterNOAA Pacific Tsunami Warning Center

kanoa.koyanagi@noaa.govkanoa.koyanagi@noaa.gov

Seismic Network OperatorsSeismic Network OperatorsNOAA Pacific Tsunami Warning Center (PTWC)NOAA Pacific Tsunami Warning Center (PTWC)• Established in 1949 after the 1946 Aleutian Islands tsunami that Established in 1949 after the 1946 Aleutian Islands tsunami that

devastated Hilo, Hawaii.devastated Hilo, Hawaii.• Operates 17 seismic stations throughout Hawaii.Operates 17 seismic stations throughout Hawaii.

USGS Hawaiian Volcanoes Observatory (HVO)USGS Hawaiian Volcanoes Observatory (HVO)• Established in 1912 to monitor Hawaii’s volcanoes. Operated Established in 1912 to monitor Hawaii’s volcanoes. Operated

continuously by the U.S. Geological Survey since 1947.continuously by the U.S. Geological Survey since 1947.• Operates 60+ seismic stations on the Island of Hawaii.Operates 60+ seismic stations on the Island of Hawaii.

USGS National Strong Motion Project (NSMP)USGS National Strong Motion Project (NSMP)• Established in 1932 by the engineering seismology community Established in 1932 by the engineering seismology community

to record strong motion ground motion in urbanized areas.to record strong motion ground motion in urbanized areas.• Operates 700+ stations in the U.S., 32 throughout Hawaii.Operates 700+ stations in the U.S., 32 throughout Hawaii.

IRIS Global Seismic Network (GSN)IRIS Global Seismic Network (GSN)• Established in 1984 as a joint partnership between the National Established in 1984 as a joint partnership between the National

Science Foundation’s IRIS Consortium and the USGS. Science Foundation’s IRIS Consortium and the USGS. • Operates 150+ high quality broadband stations, 2 in Hawaii.Operates 150+ high quality broadband stations, 2 in Hawaii.

December 2011

PTWC Field HardwarePTWC Field Hardware

Broadband + Strong-Broadband + Strong-Motion Sites:Motion Sites:all of the following:all of the following:

• Streckeisen STS-2 Streckeisen STS-2 broadband seismometerbroadband seismometer

• Kinemetrics EpiSensor Kinemetrics EpiSensor ES-T accelerometerES-T accelerometer

• Kinemetrics Q330 Kinemetrics Q330 digitizerdigitizer

• Kinemetrics Marmot Kinemetrics Marmot field serverfield server

Strong-Motion + Strong-Motion + Short-Period Sites:Short-Period Sites:eithereither

• Kinemetrics Basalt Kinemetrics Basalt digitizer/field server with digitizer/field server with embedded EpiSensor embedded EpiSensor ES-T accelerometerES-T accelerometer

oror

• NetDAS digitizer/field NetDAS digitizer/field server with Metrozet TSA-server with Metrozet TSA-100S accelerometer100S accelerometer

++

• Some sites with Some sites with additional GeoTech S-13 additional GeoTech S-13 short-period vertical short-period vertical seismometersseismometers

Site PhotosSite Photos

Combination of existingCombination of existingvaults with newlyvaults with newlyconstructed vaults.constructed vaults.

Mauna Loa, HawaiiMauna Loa, Hawaii

Kekaha, KauaiKekaha, Kauai

Haleakala, MauiHaleakala, Maui

Seismic Data AcquisitionSeismic Data Acquisition

AntelopeAntelope• Import Q330 (orb2orb)Import Q330 (orb2orb)

• Data export to IRIS Data export to IRIS (orb2orb ?)(orb2orb ?)

EarthwormEarthworm• Import Basalt Import Basalt

(slink2ew), NetDas (slink2ew), NetDas (grf2ew)(grf2ew)

• Data exchange with Data exchange with HVO (import/export), HVO (import/export), IRIS (liss2ew), NSMPIRIS (liss2ew), NSMP

Seismic Data ProcessingSeismic Data Processing

MagnitudeMagnitude• SPLERT Pmag (for paging), SPLERT Pmag (for paging),

eqcoda (MD), localmag (ML)eqcoda (MD), localmag (ML)

• Mwp processing for events Mwp processing for events larger than ~M6.0larger than ~M6.0

Performance GoalPerformance Goal• To issue local Hawaii tsunami To issue local Hawaii tsunami

bulletins within 90 seconds of bulletins within 90 seconds of origin time.origin time.

LocationLocation

• SPLERT (System for Processing Local Earthquakes in Real Time) – an SPLERT (System for Processing Local Earthquakes in Real Time) – an Earthworm-based legacy systemEarthworm-based legacy system

• Earthworm v7.5 – eq_assemble and eqproc, pick_ew, binder, hyp2000Earthworm v7.5 – eq_assemble and eqproc, pick_ew, binder, hyp2000

PTWC Data at IRIS DMCPTWC Data at IRIS DMC

Data exported to and Data exported to and archived by the IRIS DMC archived by the IRIS DMC since September 2011.since September 2011.

MahaloMahalo(Thank You)(Thank You)