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Earthquake Catalogs

These catalogs are lists of earthquakes that have occured within Oklahoma. Each earthquake is accompanied by detailed information regarding its location and size. The Catalogs found here are fairly complete to a minimum magnitude of 2.9 from 1980 to present, a minimum magnitude of 3.6 from 1960 to present, and a minimum magnitude of 5.0 from 1897 to present. Each catalog year, or range of years, has many downloadable file formats. Refer to Catalog Header Descriptions beow for explanations on catalog column headers.

Category
Description
idInternal identification number assigned by the OGS*
origintimeEstimated date and time of the earthquake
latitudeEstimated latitudinal coordinate of the earthquake epicenter
longitudeEstimated Longitudinal coordinate of the earthquake epicenter
depthCalculated depth of the earthquake in kilometers
err_lon90% confidence interval for location uncertainty in kilometers
err_lat90% confidence interval for location uncertainty in kilometers
err_depth90% confidence interval for location uncertainty in kilometers
err_origintime90% confidence interval for location uncertainty in seconds
countyCounty within which the earthquake was located
origin_srcSource of reported earthquake location
prefmagPreferred magnitude
pmag_typeType of magnitude reported
pmag_srcSource of reported magnitude
mwNon-OGS Moment Magnitude estimation
mw_srcSource of moment magnitude estimation
mblg_ogsLg body-wave magnitude estimation by the OGS
mblg_usgsLg body-wave magnitude estimation by the USGS**
ml_ogsLocal magnitude estimated by the OGS
m3hz_ogsLg magnitude estimate formerly used by the OGS
md_ogsEarthquake duration magnitude estimated by the OGS
mbBody-wave magnitude generally reported by the USGS
msSurface-wave magnitude estimation generally reported by the USGS
mfaMagnitude estimate based on felt area, primarily for historical events
max_mmiMaximum Modified Mercalli Intensity
reafileOGS Internal data structure
reamtimeLast time the earthquake was updated by an analyst
geomA well-known binary (WKB) Geographic Information System (GIS) format
pdlidThe identification number used to track submissions to the USGS Product Distribution Layer (PDL) system
mw_ogsMoment magnitude calculated by the OGS}

How to View Catalogs in Google Earth

Step 1:

Choose the catalog you would like to view (sorted by date). Near the bottom of the list are the more useful 'past30days' or 'complete' options. Note that the 'complete' option will be quite large.

Step 2:

Once you click a catalog to view, a list of file types will be displayed for download. Download the '.kml' version of the file. 

Step 3:

Then, in Google Earth, go to 'file' and 'open', then select the .kml file you downloaded. The events for that particular catalog should then show up in Google Earth.