|
|
| (112 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| − | == SCEC Earthquake Early Warning Activities ==
| + | [[Image:SCEC_NSF-USGS-words_logom.png|left|150px]][[Image:CISNlogos.png|right|250px]] |
| − | SCEC4 science plans emphasize the development and use of time-dependent seismic hazard analysis. SCEC is working to extend time-dependent seismic hazard analysis through application of EEW technologies.
| + | [[Image:Swiss_Seismological_Service-Logo.png|right|40px]] |
| | + | [[Image:usgs-logo-color.jpg|right|150px]] |
| | | | |
| − | == CISN ShakeAlert System ==
| + | Earthquake early warning (EEW) is a technology that can provide rapid information about an earthquake. Under favorable circumstances, EEW technology can provide automated warning of strong ground motions from an earthquake before those ground motions have propagated to all affected sites. EEW technology provides warnings after the earthquake has begun but before the earthquake has affected all users. |
| − | SCEC is working with the [http://www.cisn.org California Integrated Seismic Network (CISN)] in the development and evaluation of a prototype CISN EEW system.
| |
| | | | |
| − | == CISN EEW Testing System Development == | + | == EEW Technology Description == |
| − | SCEC is working to developed automated CISN EEW performance evaluation system. This system, currently called the CISN Testing Center (CTC), is based on the testing framework developed on the SCEC CSEP project.
| |
| | | | |
| − | == CISN EEW Station Lists ==
| + | EEW forecast capabilities require (a) ground motion (or other) geophysical sensors, (b) scientific processing software, and (c) a communication system distributing information to users. Detailed descriptions of EEW technology can be found here: |
| | | | |
| − | CISN provided the following list of stations used in current CISN EEW processing
| + | *[http://en.wikipedia.org/wiki/Earthquake_warning_system EEW (Wikipedia)] |
| | + | *[http://en.wikipedia.org/wiki/Earthquake_Early_Warning_%28Japan%29 Japan EEW] |
| | | | |
| − | *[http://scecdata.usc.edu/maechling/stations_nc_04.13.2010.txt Northern CISN Station List]
| + | == CISN EEW Project == |
| − | *[http://scecdata.usc.edu/maechling/stations_sc_04.13.2010.txt Southern CISN Station List]
| |
| − | *[http://scecdata.usc.edu/maechling/cisn_eew_10Oct_2010_v1.kml Combined CISN EEW Station List (KML Format)]
| |
| | | | |
| − | [[File:Eew_stations_cal_m8.png|256px|thumb|left|Fig 1: California Station List with M8 Epicenter.]] | + | [http://www.cisn.org California Integrated Seismic Network (CISN)] research groups, together with SCEC and USGS, are developing a prototype CISN EEW system called the CISN [http://earthquake.usgs.gov/earthquakes/ ShakeAlert] system. |
| | | | |
| − | == Example Observations from ShakeMap RSS for Event (M5.0 ) ==
| + | [[SCEC]]'s current research focus on the [[ShakeAlert]] project is the development of an automated CISN EEW performance evaluation system. This EEW performance evaluation system, currently called the CISN Testing Center (CTC), is based on the testing framework developed on the SCEC [[CSEP]] project. |
| | | | |
| − | [[File:scec.eew.EEWTest.eewTest_SHAKEMAP-Test_Event10736069.png|340px|thumb|left|Fig 2: Plotting of ShakeMap observation data for Event in Southern California.]]
| + | SCEC4 science plans emphasize the development and use of time-dependent seismic hazard analysis. SCEC earthquake system science research approach seeks to integrate EEW technologies into time-dependent seismic hazard analysis through applications. |
| | | | |
| − | [[File:scec.eew.EEWTest.eewTest_SHAKEMAP-Test_ZoomEvent10736069.png|340px|thumb|left|Fig 3: Plotting of ShakeMap observation data for Event in Southern California.]]
| + | CISN and SCEC are collaborating on the development of EEW evaluation tools and techniques. Detailed EEW development notes and current evaluation results are posted on related wiki entries including: |
| | | | |
| − | == Authorized Data Source ==
| + | *[[CISN Testing Center]] |
| | + | *[[CISN Testing Center (CTC) Results]] |
| | + | *[[ShakeAlert]] |
| | | | |
| − | The ShakeMap authorized data source may provide the observational data used to validate short term ground motion forecasts.
| + | == CISN EEW Collaborators == |
| | | | |
| − | *[http://earthquake.usgs.gov/earthquakes/shakemap/rss_info.php ShakeMap Rss System]
| |
| − |
| |
| − |
| |
| − |
| |
| − |
| |
| − |
| |
| − |
| |
| − |
| |
| − |
| |
| − | == Test Event List 2010 ==
| |
| − |
| |
| − | * catalog=ANSS
| |
| − | * start_time=2010/06/01,00:00:00
| |
| − | * end_time=2010/11/01,00:00:00
| |
| − | * minimum_latitude=32.00
| |
| − | * maximum_latitude=42.00
| |
| − | * minimum_longitude=-122.00
| |
| − | * maximum_longitude=-114.00
| |
| − | * minimum_magnitude=4.0
| |
| − | * maximum_magnitude=10
| |
| − | * event_type=E
| |
| − |
| |
| − | Date Time Lat Lon Depth Mag Magt Nst Gap Clo RMS SRC Event ID
| |
| − | ----------------------------------------------------------------------------------------------
| |
| − | 2010/06/02 16:07:48.08 32.0560 -115.1967 10.00 4.30 ML 12 0.22 CI 14732212
| |
| − | 2010/06/03 18:10:04.03 32.6952 -115.9142 5.11 4.10 ML 43 0.23 CI 14733516
| |
| − | 2010/06/10 22:07:12.97 32.0305 -115.1072 10.00 4.14 ML 7 0.28 CI 10699845
| |
| − | 2010/06/11 20:51:11.69 32.3900 -115.1818 15.00 4.26 ML 17 0.29 CI 10700429
| |
| − | 2010/06/12 15:29:25.45 37.4527 -117.5194 5.87 4.54 ML 25 96 53 0.14 NN 312414
| |
| − | 2010/06/13 03:08:57.09 33.3833 -116.4158 12.48 4.90 ML 125 0.26 CI 10701405
| |
| − | 2010/06/13 03:09:20.36 33.3920 -116.3947 5.57 4.23 ML 44 0.32 CI 10701413
| |
| − | 2010/06/14 07:02:26.97 32.1803 -115.3155 10.00 4.69 ML 11 0.20 CI 10703133
| |
| − | 2010/06/15 04:26:58.48 32.7002 -115.9213 5.41 5.72 Mw 52 0.28 CI 14745580
| |
| − | 2010/06/15 04:36:07.63 32.6792 -115.9242 12.48 4.11 ML 49 0.37 CI 14745636
| |
| − | 2010/06/15 04:59:45.53 32.6995 -115.9500 10.69 4.61 ML 71 0.33 CI 14745932
| |
| − | 2010/06/15 05:34:16.83 32.7088 -115.9563 5.52 4.35 ML 68 0.28 CI 14746172
| |
| − | 2010/06/15 08:14:47.02 32.6880 -115.9108 3.77 4.15 ML 67 0.30 CI 14747396
| |
| − | 2010/06/17 09:05:38.19 32.0748 -115.0040 10.00 4.13 ML 9 0.40 CI 10160722
| |
| − | 2010/06/25 06:37:52.80 32.6188 -115.7947 6.44 4.17 ML 50 0.31 CI 10724149
| |
| − | 2010/07/06 16:38:05.23 32.2180 -115.3462 1.51 4.27 ML 16 0.23 CI 14776012
| |
| − | 2010/07/07 23:53:33.53 33.4205 -116.4887 13.97 5.43 Mw 144 0.27 CI 10736069
| |
| − | 2010/07/20 21:48:29.98 40.0764 -119.6219 11.75 4.22 ML 33 245 23 0.10 NN 314044
| |
| − | 2010/07/30 11:13:46.81 38.6220 -118.2116 11.14 4.24 ML 19 189 27 0.11 NN 314505
| |
| − | 2010/08/06 17:39:31.67 33.9790 -116.4432 7.66 4.05 ML 122 0.18 CI 10771621
| |
| − | 2010/08/24 21:43:39.96 32.3633 -115.4110 10.00 4.22 ML 21 0.30 CI 10785477
| |
| − | 2010/08/29 15:53:43.42 32.1803 -115.2930 10.00 4.28 ML 15 0.22 CI 10788765
| |
| − | 2010/09/14 10:52:18.00 32.0485 -115.1982 10.00 4.96 Mw 14 0.21 CI 10798005
| |
| − | 2010/09/15 06:09:53.38 32.1647 -115.2467 13.79 4.79 ML 12 0.20 CI 10798845
| |
| − | 2010/09/20 00:30:02.40 32.0262 -115.1083 10.00 4.75 Mw 9 0.22 CI 14844244
| |
| − | 2010/09/30 08:37:35.93 37.1385 -117.3803 8.47 4.42 ML 24 144 21 0.23 NN 317359
| |
| − | 2010/10/05 21:22:46.52 37.1526 -117.3758 9.21 4.14 ML 13 164 19 0.12 NN 318065
| |
| − |
| |
| − |
| |
| − | == Earthquake Wave Travel Time Curves ==
| |
| − | [[File:Define_Reference_Events.png|340px|thumb|right|Fig 4: Travel time curves show region for which no warnings are possible because of travel time and processing delays.]]
| |
| − |
| |
| − |
| |
| − | == Ground Motion Intensity Scale ==
| |
| − | [[File:shakemap_color_scale.png|340px|thumb|right|Fig 5: ShakeMap color scale shows instrumental intensity estimates or observations.]]
| |
| − |
| |
| − | == CTC Abstract for SCEC Annual Meeting 2010 ==
| |
| − |
| |
| − | Testing Regional-scale Ground Motion Estimates for the CISN ShakeAlert Project
| |
| − | Philip Maechling, Maria Liukis, Thomas H. Jordan
| |
| − |
| |
| − | Our SCEC research team has developed initial capabilities of the CISN Testing Center (CTC) as a part of the USGS-funded CISN ShakeAlert Project. The CTC is designed to compare regional-scale ground motion estimates, such as peak ground motion estimates, against observed ground motion data, for significant California Earthquakes. The CTC is designed to identify which ShakeAlert ground motion estimation methods produce the best fit to observed ground motions.
| |
| − |
| |
| − | Scientific goals of the CTC include (a) development of consensus among SCEC researchers on meaningful measures of comparison between ground motion estimates and observations, (b) collection and analysis of ShakeAlert performance information, and (c) integration of standard Probabilistic Seismic Hazard Analysis (PSHA) terms and practices into EEW. The technical goal of the CTC is to develop an automated system that can comparing ground motion estimates against ground motion observations. The CTC system used the CSEP testing framework to automate the evaluation of CISN ShakeAlert rapid earthquake parameters including ground motion forecasts for each event.
| |
| − |
| |
| − | As part of this year’s CTC development, we updated the CSEP Testing Framework to use the USGS ShakeMap RSS Feed as an authorized source of event-based ground motion observations. As ShakeAlert systems produces rapid ground motion estimates for significant California events, the CTC will evaluate those ShakeAlert ground motion estimates against CISN ground motion observation using goodness-of-fit algorithms defined by CISN scientific groups.
| |
| − |
| |
| − | Our ShakeAlert ground motion forecast testing shares scientific and technical goals with several other SCEC activities including validation of attenuation relationships, synthetic ShakeMaps, velocity model and wave propagation model goodness of fit measures, and short term ground motion forecast testing. The CTC system is designed to support CISN ShakeAlert testing and to also be applicable for evaluation of other ground motion estimation methods.
| |
| − |
| |
| − | == EEW Graphics ==
| |
| − | [[File:eew1.png|340px|thumb|right|Fig 6: JMA diagram showing EEW concepts and types of EEW system implementations.]]
| |
| − |
| |
| − | [[File:eew2.png|340px|thumb|left|Fig 7: JMA diagram showing potential users of EEW ground motion forecasts.]]
| |
| − |
| |
| − | [[File:SanFranciscoChronicleSciSecFig.jpg|340px|thumb|right|Fig 8: San Francisco Chronicle graphic showing EEW concepts in California.]]
| |
| − |
| |
| − | == Additional ShakeAlert Information ==
| |
| | *[http://www.cisn.org/ CISN Home Page] | | *[http://www.cisn.org/ CISN Home Page] |
| − | *[http://www.usgs.gov/newsroom/article.asp?ID=2366&from=rss_home USGS ShakeAlert Press Release] | + | *[http://eew.caltech.edu/ Caltech EEW Page] |
| − | *[http://www.seismolab.caltech.edu/ Caltech Seismo Lab] | + | *[http://www.seismolab.caltech.edu/index.html Caltech Seismology] |
| − | *[http://seismo.berkeley.edu/ U.C. Berkeley Seismo Lab] | + | *[http://seismo.berkeley.edu/ U.C. Berkeley Seismological Station] |
| | *[http://earthquake.usgs.gov/regional/sca/ USGS Pasadena Seismic Network Operations] | | *[http://earthquake.usgs.gov/regional/sca/ USGS Pasadena Seismic Network Operations] |
| | *[http://earthquake.usgs.gov/regional/nca/ USGS Menlo Park Seismic Network Operations] | | *[http://earthquake.usgs.gov/regional/nca/ USGS Menlo Park Seismic Network Operations] |
| | + | *[http://www.seismo.ethz.ch/index_EN Swiss Seismological Service at ETH Zurich] |
| | + | *[http://www.scec.org/ Southern California Earthquake Center (SCEC)] |
| | | | |
| | + | == California Earthquake Information == |
| | + | *[http://earthquake.usgs.gov/earthquakes/recenteqscanv/ CISN Recent Earthquakes] |
| | + | *[http://earthquake.usgs.gov/earthquakes/shakemap/ USGS ShakeMap] |
| | | | |
| − | == Additional Information == | + | == Related Entries == |
| − | */export/data/cisneew/data_in - path to input data for current cisn testing
| |
| − | | |
| | | | |
| − | == References ==
| + | *[[EEW Evaluation]] |
| − | *[http://scecdata.usc.edu/maechling/K4_Erdik.pdf Mustafa Erdik EEW Presentation (2006)] | + | *[[CSEP]] |
| − | *[http://scecdata.usc.edu/maechling/O06_UJNR200611081.pdf Shin'ya TSUKADA EEW Presentation (2006)] | + | *[[Main Page]] |
| − | *[http://scecdata.usc.edu/maechling/mboese_IST_LunchBunch2009.pdf Maren Bose EEW Presentation (2009)] | |
