Network PresentationNetwork Presentation
Tomoki WatanabeIFREE/DONET-MARITEC/JAMSTEC
Marine Works Japan Co.
Tomoki WatanabeIFREE/DONET-MARITEC/JAMSTEC
Marine Works Japan Co.
My first work with OBS, taken in 1990(Reykjanes Ridge experiment)
JAMSTEC Network Presentation
JAMSTEC Network Presentation
Tsuboi-san already presented.We have ….
Broadband seismic network (Pacific 21)Cabled Observatories
MurotoHatsushimaKushiro-Tokachi
Tsuboi-san already presented.We have ….
Broadband seismic network (Pacific 21)Cabled Observatories
MurotoHatsushimaKushiro-Tokachi
Pacific 21 Network and DMC network design
Pacific 21 Network and DMC network design
STS-2: HBR, MCSJSTS-1: KMS, TSK, INU, TJN, OGS, BAG, PALU, JAY, PSI, PMG CMG-3T: KSI
Seiscomp Test….Seiscomp Test….
STS-1+Q330HRQ330HR
Networkgeometry
Waveform of the 2007 Sumatra earthquake (Mw 8.2, sensor:STS-1)
Snapshot of the SeisComp monitor (seisgram)
JAMSTEC Network Presentation
JAMSTEC Network Presentation
Tsuboi-san already presented.We have ….
Broadband seismic network (Pacific 21)Cabled Observatories
MurotoHatsushimaKushiro-Tokachi
Tsuboi-san already presented.We have ….
Broadband seismic network (Pacific 21)Cabled Observatories
MurotoHatsushimaKushiro-Tokachi
JAMSTEC Cabled Observatories
JAMSTEC Cabled Observatories
Muroto ObservatoryHatsushima Observatory
KushiroObservatory
DONET--ocean bottom network coming near future--
DONET--ocean bottom network coming near future--
Development of Dense Oceanfloor Network System for Earthquakes and Tsunamis (DONET)Sensor spacing: ~20km
Network plan for DONETNetwork plan for DONET
5 nodes & 20 station Realtime monitoring 5 nodes & 20 station Realtime monitoring
Topics on Kushiro observation
Topics on Kushiro observation
Kushiro Cabled Observatory
Kushiro Cabled Observatory
- Cable Length: c.a. 240km-3 Seismometers (accelerometer)Japan Aviation Electronics Industory(JAE) JAE5-III- 2 Tsunami gauges-1 cable-end station (ADCP, CTD, camera,Hydrophone, sub-sea thermometer)
Observation: 1999. July -
Stations and structure used
in hypocenter determination
Stations and structure used
in hypocenter determination
Data exchange in Japan (with other institutes):-2006.12.19 via Satellite & IP-VPN2006.12.19 – IPv6 multicast & IP-VPN
Data exchange in Japan (with other institutes):-2006.12.19 via Satellite & IP-VPN2006.12.19 – IPv6 multicast & IP-VPN
Network geometry of Seismological Data exchange in Japan (connected by IP-VPN or Frame Relay)
Cumulative number of processed earthquakes
Station Distribution
Velocity Structure
Kushiro Observatory - Earthquake Detectability -
Kushiro Observatory - Earthquake Detectability -
Comparison of magnitudesWith JMA magnitude
Comparison of Detectabillity before/after OBS installation
Period: 2001. June-2002 Dec.
M(JMA)=0.663M(ISV)+1.132 After installation, minimum magnitude detectable Was improved to ~ M2.
Topics on Kushiro observatory
Topics on Kushiro observatory
Seismicity – 2 gaps was recognizedoff SE Hokkaido….Seismicity – 2 gaps was recognizedoff SE Hokkaido….
2003 Tokachi-oki earthquake(M8.0)2003 Tokachi-oki earthquake(M8.0)
Waveform of the MainshockAt the nearest seismometer (OBS)
Aftershock distribution
Data – available via…Data – available via…
Pacific 21:(ninja, full SEED)http://www.jamstec.go.jp/pacific21/ Ocean Bottom Cable Data Center: (win format)http://www.jamstec.go.jp/scdc/
File format converter (win2db) :http://www.iris.edu/manuals/#11Or SeisComp Package (ver. 2.5, for online data)
Pacific 21:(ninja, full SEED)http://www.jamstec.go.jp/pacific21/ Ocean Bottom Cable Data Center: (win format)http://www.jamstec.go.jp/scdc/
File format converter (win2db) :http://www.iris.edu/manuals/#11Or SeisComp Package (ver. 2.5, for online data)
And one more contenton the seafloor
when an earthquake occurs…
And one more contenton the seafloor
when an earthquake occurs…