croninprojects.org/ Vince/ SLAM/ SLAMWorkflow.html |
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The purpose of this web page is to outline the work process involved in performing the Seismo-Lineament Analysis Method in Vince Cronin's lab at Baylor. All original components of the SLAM process (including, in particular, the computer codes) are Vince Cronin's intellectual and personal property, and are copyright (2014) by Vincent S. Cronin. Their use for scientific and educational purposes is permitted and encouraged.
This web page is a work in progress.
Hypocenter location: latitude, longitude, depth
USGS latest EQs | http://earthquake.usgs.gov/earthquakes/map/ |
USGS catalog | http://earthquake.usgs.gov/earthquakes/search/ |
ISC catalog | http://www.isc.ac.uk/iscbulletin/search/catalogue/ |
SCEC catalog | http://www.data.scec.org/eq-catalogs/date_mag_loc.php |
NCEDC catalog | http://www.ncedc.org/ncedc/catalog-search.html |
Felix Waldhauser's DD catalog for N. California | http://ddrt.ldeo.columbia.edu/DDRT/index.html |
Focal mechanism (orientation of nodal planes)
You might want to refer to the focal mechanism primer at http://serc.carleton.edu/files/NAGTWorkshops/structure04/Focal_mechanism_primer.pdf
USGS latest EQs | http://earthquake.usgs.gov/earthquakes/map/ |
USGS catalog | http://earthquake.usgs.gov/earthquakes/search/ |
ISC catalog | http://www.isc.ac.uk/iscbulletin/search/catalogue/ |
SCEC catalog | http://www.data.scec.org/eq-catalogs/CMTsearch.php |
NCEDC catalog | http://www.ncedc.org/ncedc/catalog-search.html |
NCEDC catalog | http://seismo.berkeley.edu/mt/ |
GCMT | http://www.globalcmt.org/CMTsearch.html |
I suggest that the minimum map area be specified by computing the horizontal distance from the epicenter to the surface trace of the more gently inclined nodal plane. Using a ballpark number for the average elevation of the epicentral area in meters (you can get this from Google Earth) added to the absolute value of the hypocenter depth in meters, the horizontal distance to the trace (in meters) will be equal to (elevation + |depth|) / tan(nodal plane dip angle). Divide that number by 1000 and you have the horizontal distance in kilometers, and divide that number by 111°/km and you have the angular distance from the epicenter to the mean ground-surface trace of the nodal plane. That will be the minimum radius from the epicenter that you will want your map to include. So, for example, if that distance was 0.1°, I would want a DEM file from the epicenter's latitude - 0.15° to the epicenter's latitude + 0.15°, and the same for the longitude. (Yes, we know the longitude angle will be different anywhere but the equator, but this is an initial ballpark number.)
Chris Breed of Baylor's Center for Spatial Research has made a couple of videos that describe (most of) the process of acquiring a DEM from the US National Map Seamless Server, manipulating it in ArcGIS, and ending-up with a suitable ASCII DEM for use in the Slam code.
http://CroninProjects.org/Vince/SLAM/ASCII_Conversion_Part_1.swf
http://CroninProjects.org/Vince/SLAM/ASCII_Conversion_Part_2.swf
Ashburn, Jeremy, 2015, Investigation of a lineament that might mark the ground-surface trace of the Dog Valley fault, Truckee area, northern California: B.S. thesis, Baylor University, accessible via http://CroninProjects.org/Vince/AshburnBSThesis2015.pdf
Bayliss, Brian, 2007, Test of a method for recognizing unmapped seismogenic faults: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/5035
Cronin, V.S., 2014, Seismo-Lineament Analysis Method (SLAM), using earthquake focal mechanisms to help
recognize seismogenic faults, in Grutzner, C., Choi, J-H., Edwards, P., and Kim, Y-.S., [editors], Proceeding of the 5th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology, 21-27 September 2014, p. 28-31, ISBN 9791195344109 93450; available online via http://CroninProjects.org/Vince/SLAM/CroninINQUA_PATA14.pdf
A PDF file of Vince Cronin's presentation at the INQUA PATA meeting in Busan, South Korea, is accessible via http://CroninProjects.org/Vince/SLAM/Cronin_PATA14.pdf, and provides a visual introduction to SLAM.
Cronin, V.S., Millard, M., Seidman, L, and Bayliss, B., 2008, The Seismo-Lineament Analysis Method (SLAM) -- A Reconnaissance Tool to Help Find Seismogenic Faults: Environmental and Engineering Geology, v. 14, no. 3, p. 199-219. Available via GeoScience World at http://eeg.geoscienceworld.org/cgi/content/abstract/14/3/199
Dickinson, Jordan, 2015, A seismo-lineament study of magnitude 3.3-5.3 earthquakes near Trinidad, Colorado: B.S. thesis, Baylor University, accessible via http://CroninProjects.org/Dickinson/Dickinson.pdf
Lancaster, Daniel, 2011, Correlation of earthquakes with seismogenic faults along the Northern Arizona Seismic Belt, southwestern margin of the Colorado Plateau: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/8228
Lindsay, Ryan, 2012, Seismo-lineament analysis of selected earthquakes in the Tahoe-Truckee area, California and Nevada: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/8441
Millard, Mark, 2007, Linking onshore and offshore data to find seismogenic faults along the Eastern Malibu coastline: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/5109
Rasaka, Brandon, 2016, Correlation of selected earthquakes with seismogenic faults, central Oklahoma: M.S. thesis, Baylor University, accessible via http://CroninProjects.org/Rasaka/Rasaka-MS-Thesis-2016.pdf
Reed, Tyler, 2014, Spatial correlation of earthquakes with two known and two suspected seismogenic faults, north Tahoe-Truckee area, California: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/9097
Seidman, Lauren, 2007, Seismo-lineament analysis of the Malibu Beach quadrangle, Southern California: M.S. thesis, Baylor University, accessible via http://hdl.handle.net/2104/5108
If you have any questions or comments about this site or its contents, drop an email to the humble webmaster.
All of the original content of this website is © 2014 by Vincent S. Cronin