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alaska_2007_intro [2015/01/08 15:01]
rgee [Model summary table]
alaska_2007_intro [2016/10/07 11:29] (current)
Armando Scarpati [The Seismic Source Model]
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 ====== The 2007 USGS Alaska Seismic Hazard Model ====== ====== The 2007 USGS Alaska Seismic Hazard Model ======
 +
 The 2007 USGS Alaska seismic hazard model is described by [[alaska_2007_intro#​References|Wesson et. al. (2007)]] (see also [[http://​earthquake.usgs.gov/​hazards/?​source=sitenav|the USGS Website]]). Here we present a short description of the OpenQuake-engine implementation of the model. The 2007 USGS Alaska seismic hazard model is described by [[alaska_2007_intro#​References|Wesson et. al. (2007)]] (see also [[http://​earthquake.usgs.gov/​hazards/?​source=sitenav|the USGS Website]]). Here we present a short description of the OpenQuake-engine implementation of the model.
  
-===== The seismic source model =====+===== The Seismic Source Model =====
 The seismic source model consists of different seismic source typologies to describe earthquake occurrence in different tectonic settings. The model defines gridded seismicity to model both active shallow and deep intraslab seismicity. Fault sources are instead defined for shallow crustal faults and large subduction interface events. Gridded seismicity models are implemented as collections of NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​point-source.xml|pointSource]] objects. Crustal faults and subduction faults are instead modeled as NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​simple-fault-source.xml|simpleFaultSource]] and NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​complex-fault-source.xml|complexFaultSource]] objects, respectively.\\ The seismic source model consists of different seismic source typologies to describe earthquake occurrence in different tectonic settings. The model defines gridded seismicity to model both active shallow and deep intraslab seismicity. Fault sources are instead defined for shallow crustal faults and large subduction interface events. Gridded seismicity models are implemented as collections of NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​point-source.xml|pointSource]] objects. Crustal faults and subduction faults are instead modeled as NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​simple-fault-source.xml|simpleFaultSource]] and NRML [[https://​github.com/​gem/​oq-nrmllib/​blob/​master/​examples/​source_model/​complex-fault-source.xml|complexFaultSource]] objects, respectively.\\
  
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 The map below depicts the annual occurrence rate per source (between minimum and maximum magnitudes) for the different source models included in the hazard model. Click the //show map layers// icon to view different source models and base layer maps. The map below depicts the annual occurrence rate per source (between minimum and maximum magnitudes) for the different source models included in the hazard model. Click the //show map layers// icon to view different source models and base layer maps.
  
-<olmap id="​olmap"​ width="​900px"​ height="​500px"​ lat="​60.0"​ lon="​-135."​ zoom="​3"​ statusbar="​1"​ toolbar="​1"​ controls="​1"​ poihoverstyle="​0"​ baselyr="​mapquest ​road" gpxfile=""​ kmlfile=""​ geojsonfile="">​+<olmap id="​olmap"​ width="​900px"​ height="​500px"​ lat="​60.0"​ lon="​-135."​ zoom="​3"​ statusbar="​1"​ toolbar="​1"​ controls="​1"​ poihoverstyle="​0"​ baselyr="​osm road" gpxfile=""​ kmlfile=""​ geojsonfile="">​
 </​olmap>​ </​olmap>​
  
-<​olmap_osmlayer id="​olmap"​ name="Alaska 2007 Grid (shallow) ​Model" url="​http://​tilestream.openquake.org/​v2/​Alaska2007_asc_grid/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Grid (shallow) Model"></​olmap_osmlayer>​+<​olmap_osmlayer id="​olmap"​ name="ASC_point ​Model" url="​http://​tilestream.openquake.org/​v2/​hazard_ALS07_input_asc_point/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Grid (shallow) Model"></​olmap_osmlayer>​
  
-<​olmap_osmlayer id="​olmap"​ name="Alaska 2007 Grid (deep) ​Model" url="​http://​tilestream.openquake.org/​v2/​Alaska2007_sub_intra_grid/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Grid (deep) Model"></​olmap_osmlayer>​+<​olmap_osmlayer id="​olmap"​ name="SubIntraSlab_point ​Model" url="​http://​tilestream.openquake.org/​v2/​hazard_ALS07_input_subintraslab_point/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Grid (deep) Model"></​olmap_osmlayer>​
  
-<​olmap_osmlayer id="​olmap"​ name="Alaska 2007 Active Shallow Crust Fault Model" url="​http://​tilestream.openquake.org/​v2/​Alaska2007_asc_fault/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Active Shallow Crust Fault Model"></​olmap_osmlayer>​+<​olmap_osmlayer id="​olmap"​ name="ASC_fault ​Model" url="​http://​tilestream.openquake.org/​v2/​hazard_ALS07_input_asc_simplefault/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Active Shallow Crust Fault Model"></​olmap_osmlayer>​
  
-<​olmap_osmlayer id="​olmap"​ name="Alaska 2007 Subduction Interface Fault Model" url="​http://​tilestream.openquake.org/​v2/​Alaska2007_sub_inter_fault/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Subduction Interface Fault Model"></​olmap_osmlayer>​+<​olmap_osmlayer id="​olmap"​ name="SubInterface_complexfault ​Model" url="​http://​tilestream.openquake.org/​v2/​hazard_ALS07_input_subinterface_complexfault/​${z}/​${x}/​${y}.png"​ visible="​true"​ attribution="​Alaska 2007 Subduction Interface Fault Model"></​olmap_osmlayer>​
  
 <​html>​ <​html>​
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 ===== Hazard Results ===== ===== Hazard Results =====
-==== Hazard ​Maps ====+==== Hazard ​maps ====
 The figures below represent hazard maps for peak ground acceleration,​ for 10% and 2% probabilities of exceedance ​ in 50 years , using the OpenQuake-engine.\\ The figures below represent hazard maps for peak ground acceleration,​ for 10% and 2% probabilities of exceedance ​ in 50 years , using the OpenQuake-engine.\\
 {{:​oq_map_alaska_pga_0.1.png?​direct&​450|}} {{:​oq_map_alaska_pga_0.1.png?​direct&​450|}}
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   * Wesson, Robert L., Boyd, Oliver S., Mueller, Charles S., Bufe, Charles G., Frankel, Arthur D., Petersen, Mark D., 2007, Revision of time-Independent probabilistic seismic hazard maps for Alaska: U.S. Geological Survey Open-File Report 2007-1043. [[http://​earthquake.usgs.gov/​hazards/​products/​ak/​2007/​documentation/​ofr2007-1043.pdf |Report]]   * Wesson, Robert L., Boyd, Oliver S., Mueller, Charles S., Bufe, Charles G., Frankel, Arthur D., Petersen, Mark D., 2007, Revision of time-Independent probabilistic seismic hazard maps for Alaska: U.S. Geological Survey Open-File Report 2007-1043. [[http://​earthquake.usgs.gov/​hazards/​products/​ak/​2007/​documentation/​ofr2007-1043.pdf |Report]]
  
-===== Model summary table =====+===== Model Summary Table =====
  
 <wrap info>​This table summarises the main characteristics of the original implementation of this model </​wrap>​ <wrap info>​This table summarises the main characteristics of the original implementation of this model </​wrap>​
  
-|< 100 5em 5050% >|+|< 100 5em 6040% >|
 ^ 1          ^ Datasets availability ​                                                                                                                                                                                                                                                                                                                    || ^ 1          ^ Datasets availability ​                                                                                                                                                                                                                                                                                                                    ||
 | 1.1        | Earthquake catalogue ​                                                                                                                          | Not available. The catalogue used to develop the model is a combination of several catalogues including the Centennial, PDE, ISC and Alaska Earthquake Information Center ​                | | 1.1        | Earthquake catalogue ​                                                                                                                          | Not available. The catalogue used to develop the model is a combination of several catalogues including the Centennial, PDE, ISC and Alaska Earthquake Information Center ​                |
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 | 5.2.6      | Ground motion fields ​                                                                                                                          | Not available ​                                                                                                                                                                            | | 5.2.6      | Ground motion fields ​                                                                                                                          | Not available ​                                                                                                                                                                            |
 | //​Notes// ​ | Almost all the results of a Classical PSHA can be computed with the [[http://​earthquake.usgs.gov/​hazards/?​source=sitenav|USGS]] fortran codes                                                                                                                                                                                             || | //​Notes// ​ | Almost all the results of a Classical PSHA can be computed with the [[http://​earthquake.usgs.gov/​hazards/?​source=sitenav|USGS]] fortran codes                                                                                                                                                                                             ||
-|                                                                                                                                                                                                                                                                                                                                                       ||| + 
-^ 6          ^ Download ​oq-engine input model (NRML format) - Please read the license and disclaimer attached to the model                                                                                                                                                                                                                                           || + 
-//Link//   ​Not available ​                                                                                                                                   ||                                                                                                                                                                                        ​+===== Download ​The OpenQuake-engine Input Model ===== 
 + 
 +The OpenQuake-engine input model (NRML format) ​can be downloaded at the link provided below - Please read the license and disclaimer attached to the model 
 + 
 +<color red/white> N.B. This is a model adapted by GEM Hazard Team to the OpenQuake-engine from the original model developed by the USGS. This explains minor differences you might encounter between the results presented in the OpenQuake platform and those disseminated by the original Organisation.<​/color> ​                                                                                                                                                                                                                                         
 + 
 +[[https://platform.openquake.org/​documents/​91 ​Download]]
  
  
  
  • alaska_2007_intro.1420725660.txt.gz
  • Last modified: 2015/01/08 15:01
  • by rgee