Presentation is loading. Please wait.

Presentation is loading. Please wait.

IRIS’s Large N Initiative Hole, Seismic Instrumentation Technology Workshop, June2012 John Hole, Virginia Tech Chair of IRIS Large N Working Group SPATIAL.

Published byLatrell Skinner Modified over 9 years ago

Similar presentations

Presentation on theme: "IRIS’s Large N Initiative Hole, Seismic Instrumentation Technology Workshop, June2012 John Hole, Virginia Tech Chair of IRIS Large N Working Group SPATIAL."— Presentation transcript:

1 IRIS’s Large N Initiative Hole, Seismic Instrumentation Technology Workshop, June2012 John Hole, Virginia Tech Chair of IRIS Large N Working Group SPATIAL ALIASING

2 Hole, Seismic Instrumentation Technology Workshop, June2012 IRIS’s current instrumentation and field procedures are ~20 years old this limits the number of instruments per project most earthquake seismology is badly spatially aliased currently limited in the science that we can do new array analysis methods have been developed directly invert or image using the full wavefield huge improvement in resolution is possible but requires data to be not spatially aliased past decades have seen rapid improvements in technology improved instruments are possible improving technology enables new science IRIS’s Large N Initiative

3 Hole, Seismic Instrumentation Technology Workshop, June2012 “Large N” = 1-2 orders of magnitude more instruments per deployment = unaliased arrays - much less expensive - much simpler deploy & retrieve instrument - much simpler to retrieve data; dirt to desktop solutions - high quality - broadest possible range of applications, from 10 m to 10,000 km transform how we acquire data IRIS’s Large N Initiative SPATIAL ALIASING resolution

4 Hole, Seismic Instrumentation Technology Workshop, June2012 Large N Example 1: Russia - USA M7.7 earthquake 2012-08-13 Sea of Okhotsk, Russia 580 km depth recorded on - broadband array - controlled-source array

5 Hole, Seismic Instrumentation Technology Workshop, June2012 EarthScope IDOR (Idaho-Oregon) 450 km long arrays 8 hour drive time 4WD, some hiking broadband: 85 stations 6 skilled crew 3 months deploy (29 inline) controlled-source: 2555 stations 44 beginners + 6 skilled 3 day deploy

6 Hole, Seismic Instrumentation Technology Workshop, June2012 EarthScope IDOR (Idaho-Oregon) P PcP 0.5-5.0 Hz 60 s PmS

7 Hole, Seismic Instrumentation Technology Workshop, June2012 EarthScope IDOR (Idaho-Oregon) P PcP 0.1-1.0 Hz on 4.5 Hz geophones! 60 s more traces than pixels! PmS

8 Hole, Seismic Instrumentation Technology Workshop, June2012 EarthScope IDOR (Idaho-Oregon) P PcP 1-10 Hz 60 s PmS

9 Hole, Seismic Instrumentation Technology Workshop, June2012 EarthScope IDOR (Idaho-Oregon) P PcP 1-10 Hz 60 s PmS

10 Hole, Seismic Instrumentation Technology Workshop, June2012 Large N Example 2: Virginia M5.8 earthquake 2011-08-23 central Virginia 8 km depth Washington MonumentNational Cathedral North Anna nuclear power plant

11 Hole, Seismic Instrumentation Technology Workshop, June2012 Aftershock Imaging with Dense Arrays (AIDA) Virginia blue & red: traditional aftershock array 42 3-component some telemetered ~20 people, 3 days green: controlled-source sensors 148 1-component 30 3-component 7 people, 1 day

12 Hole, Seismic Instrumentation Technology Workshop, June2012 Aftershock Imaging with Dense Arrays (AIDA) Virginia 200 m spacing

13 Hole, Seismic Instrumentation Technology Workshop, June2012 Aftershock Imaging with Dense Arrays (AIDA) Virginia 200 m spacing

14 Hole, Seismic Instrumentation Technology Workshop, June2012 Aftershock Imaging with Dense Arrays (AIDA) Virginia Sumatra-Andaman 2004 M9.0 earthquake Japan HiNET stations @20 km spacing source back-projection by reverse-time migration Ishii et al., 2005 300 km 30 s420 s resolution ~100 km and ~20 s

15 Hole, Seismic Instrumentation Technology Workshop, June2012 Aftershock Imaging with Dense Arrays (AIDA) Virginia Wang, Hole et al., in prep. Virginia 2011 M2.9 aftershock AIDA stations @200 m spacing source back-projection by reverse-time migration resolution ~0.5 km and ~0.05 s 1 km 0 s 0.09 s 0.03 s 0.06 s

16 Hole, Seismic Instrumentation Technology Workshop, June2012 Today: 1990’s technology broadband ~$35k >100 kg 3-6-hour deployment long period high sensitivity 3-component large memory GPS Texan ~$4k <2 kg 3-minute deployment for Large N: combine the best of both probably some compromises quantity quality

17 Hole, Seismic Instrumentation Technology Workshop, June2012 Today: 1990’s technology high-quality waveforms high-quality wavefields for Large N: combine the best of both probably some compromises

18 Hole, Seismic Instrumentation Technology Workshop, June2012 IRIS 5-year proposal for FY14-18 (starts Oct. 2013) sustain the core facilities complete the goals of the EarthScope USArray facilitate evolving science create sustainability beyond 2018 proposal approved by NSF, cooperative agreement being negotiated reduced funding expected IRIS’s Large N Initiative

19 Hole, Seismic Instrumentation Technology Workshop, June2012 IRIS 5-year proposal for FY14-18 (starts Oct. 2013) sustain the core facilities complete the goals of the EarthScope USArray facilitate evolving science create sustainability beyond 2018 proposal approved by NSF, cooperative agreement being negotiated reduced funding expected in the proposal: IRIS is strongly committed to continue providing existing instrument services global (to 300 s) through to near-surface (to 1000 Hz) and development of Large N develop, purchase, pilot a Large N deployment IRIS’s Large N Initiative

20 Hole, Seismic Instrumentation Technology Workshop, June2012 plan for implementation (schedule tentative) by early 2014: - develop science objectives, engage stakeholders (workshop May 2012) (Large N Working Group) (webinars, workshop?) - compile needs to enable the objectives (no decisions) - explore technology options and developments (e.g., this meeting) by summer 2014: - make technical decisions, compromises (IRIS governance) - place orders for prototype instruments (~10?) - design integrated systems for technical support, data support IRIS’s Large N Initiative

21 Hole, Seismic Instrumentation Technology Workshop, June2012 plan for implementation (schedule tentative) by summer 2015: - test prototype instruments - place place order for prototype array (N = 500-1000?) - develop integrated systems for technical support, data support during 2016: - deploy prototype array in pilot project(s) by early 2017: - validate value of Large N system - fund-raising by end of 2018: - place order for multiple large-N systems (MxN = 25,000???) IRIS’s Large N Initiative

22 SPATIAL ALIASING Hole, Seismic Instrumentation Technology Workshop, June2012 Goal: enable unaliased seismic array deployments completely new science should be enabled by early 2017: - acquire Large N datasets - prove viability of Large N systems - validate value of Large N datasets by 2018: - purchase several Large N systems IRIS’s Large N Initiative

Download ppt "IRIS’s Large N Initiative Hole, Seismic Instrumentation Technology Workshop, June2012 John Hole, Virginia Tech Chair of IRIS Large N Working Group SPATIAL."

Similar presentations

WP 3.4 High Frequency GPS: a potential contribution for monitoring a active faults Test site Irpinia Roma, 24 marzo 2010 Resp. Antonio Avallone M. Marzario,

WP 3.4 High Frequency GPS: a potential contribution for monitoring a active faults Test site Irpinia Roma, 24 marzo 2010 Resp. Antonio Avallone M. Marzario,
Society-relevant Arrays for Developing Countries: Opportunities and Challenges in South Africa Andy Nyblade Penn State University Workshop on Arrays in.

Society-relevant Arrays for Developing Countries: Opportunities and Challenges in South Africa Andy Nyblade Penn State University Workshop on Arrays in.
OBSIP Overview Instrumentation Centers: Lamont-Doherty Earth Observatory A. Barclay, J. Gaherty, M. Tolstoy Scripps Institution of Oceanography J. Babcock,

OBSIP Overview Instrumentation Centers: Lamont-Doherty Earth Observatory A. Barclay, J. Gaherty, M. Tolstoy Scripps Institution of Oceanography J. Babcock,
Imaging with Non-Aliased Seismic Wavefields Large N (and not just sensors) John Hole, IRIS Active Source Workshop, 2014 John Hole Virginia Tech SPATIAL.

Imaging with Non-Aliased Seismic Wavefields Large N (and not just sensors) John Hole, IRIS Active Source Workshop, 2014 John Hole Virginia Tech SPATIAL.
Faults in Focus: Earthquake Science Accomplishments Thomas H. Jordan Director, Southern California Earthquake Cente r 28 February 2014.

Faults in Focus: Earthquake Science Accomplishments Thomas H. Jordan Director, Southern California Earthquake Cente r 28 February 2014.
Rethinking Array Seismology in Nuclear-Test-Ban Treaty Monitoring Steven J. Gibbons Workshop on Arrays in Global Seismology, Raleigh, North Carolina, May.

Rethinking Array Seismology in Nuclear-Test-Ban Treaty Monitoring Steven J. Gibbons Workshop on Arrays in Global Seismology, Raleigh, North Carolina, May.
IMW Strategic Planning August 14, 2006 1 “Options for Political Activism to Get Increased Funding” John G. Anderson Director, Nevada Seismological Laboratory.

IMW Strategic Planning August 14, “Options for Political Activism to Get Increased Funding” John G. Anderson Director, Nevada Seismological Laboratory.
New Mexico Seismic Networks 1. New Mexico Tech Seismic Network Rick Aster, Sue Bilek (NMT EES Dept Contacts)

New Mexico Seismic Networks 1. New Mexico Tech Seismic Network Rick Aster, Sue Bilek (NMT EES Dept Contacts)
Data centres and observablesModern Seismology – Data processing and inversion 1 Data in seismology: networks, instruments, current problems  Seismic networks,

Data centres and observablesModern Seismology – Data processing and inversion 1 Data in seismology: networks, instruments, current problems  Seismic networks,
Existing Infrastructure for International Exchange of Seismic Data Raymond J. Willemann GEM Technology, Washington, D.C. IASPEI:Includes commissions for.

Existing Infrastructure for International Exchange of Seismic Data Raymond J. Willemann GEM Technology, Washington, D.C. IASPEI:Includes commissions for.
SUPERSITES COORDINATION WORKSHOP Monday 10 June 2013

SUPERSITES COORDINATION WORKSHOP Monday 10 June 2013
Visualizing the Seismic Wavefield with EarthScope’s Transportable Array AGU, Fall 2008 Chuck Ammon, Penn State Bob Woodward, IRIS Kevin Furlong, Penn State.

Visualizing the Seismic Wavefield with EarthScope’s Transportable Array AGU, Fall 2008 Chuck Ammon, Penn State Bob Woodward, IRIS Kevin Furlong, Penn State.
Correlations 1 Surface waves and correlations  Correlation of time series  Similarity  Time shifts  Applications  Correlation of rotations/strains.

Correlations 1 Surface waves and correlations  Correlation of time series  Similarity  Time shifts  Applications  Correlation of rotations/strains.
Fine-scale structure of the San Andreas fault zone and location of the SAFOD target earthquakes Thurber, Roecker, Zhang, Baher, and Ellsworth Geophysical.

Fine-scale structure of the San Andreas fault zone and location of the SAFOD target earthquakes Thurber, Roecker, Zhang, Baher, and Ellsworth Geophysical.
Sealing the deal? A seismic source model for strombolian explosions at Fuego volcano, Guatemala John Lyons Greg Waite Tricia Nadeau 17.

Sealing the deal? A seismic source model for strombolian explosions at Fuego volcano, Guatemala John Lyons Greg Waite Tricia Nadeau 17.
Las Vegas Valley Seismic Response Project Catherine Snelson, Wanda Taylor, and Barbara Luke University of Nevada Las Vegas John Louie, John Anderson, and.

Las Vegas Valley Seismic Response Project Catherine Snelson, Wanda Taylor, and Barbara Luke University of Nevada Las Vegas John Louie, John Anderson, and.
An Earth science program to explore the 4D structure of the North American continent.

An Earth science program to explore the 4D structure of the North American continent.
4 th COPS Workshop, Hohenheim, 25 – 26 September 2006 Modeling and assimilation efforts at IPM in preparation of COPS Hans-Stefan Bauer, Matthias Grzeschik,

4 th COPS Workshop, Hohenheim, 25 – 26 September 2006 Modeling and assimilation efforts at IPM in preparation of COPS Hans-Stefan Bauer, Matthias Grzeschik,
CoCom 2012 April 9-10 2013-2018 Budget framework: NSF merger of IRIS Cooperative Agreement & IRIS USArray into a single proposal - NSF (and gov’t) envisions.

CoCom 2012 April Budget framework: NSF merger of IRIS Cooperative Agreement & IRIS USArray into a single proposal - NSF (and gov’t) envisions.
Industry-style combined active/passive dense array surveys: directions and issues. Dan Hollis, NodalSeismic, LLC 26 January 2014Active Source Workshop.

Industry-style combined active/passive dense array surveys: directions and issues. Dan Hollis, NodalSeismic, LLC 26 January 2014Active Source Workshop.

Similar presentations

Ads by Google