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Probabilistic seismic hazard maps were prepared for Alaska portraying peak horizontal ground acceleration and horizontal spectral response acceleration for 0.2, 0.3, and 1.0 second periods with probabilities of exceedance of 10% in 50 years and 2% in 50 years. This particular data set is for peak horizontal acceleration with a 10% probability of exceedance in 50 years. All of the maps were prepared by combining hazard derived from spatially-smoothed historic seismicity with hazard from fault-specific sources. The acceleration values contoured are the random horizontal component. The reference site condition is firm rock, defined as having an average shear-wave velocity of 760 m/sec in the top 30 meters corresponding...
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The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form ofpaleoliquefaction features, including shaking-induced sandblows anddikes that fed them.Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidenceof liquefaction. They found numerous dikes and sandblows.This database includes the locations and descriptions of dikes theyobserved and measured.The most widespread paleoliquefaction is attributed to amid-Holocene earthquake near what is now Vicennes, IN, with anestimated moment- magnitude of about 7.5. Stratigraphic,geomorphological,...
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form of paleoliquefactionfeatures, including shaking-induced sandblows and dikes that fed them.Over several summer field seasons between 1990 and 1994, Cheryl andPat Munson, along with several of their students, searched ditchesand river banks for evidence of liquefaction. They found numerousbanks with shaking-induced sandblows and the dikes that fed them.This database includes the location of dikes thatthe Munsons and those with them observed and measured. Dike thicknesswas divided into 5 classes, 1 being the smallest at 0-4 cm, 2 = 5-14 cm,3...
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form of paleoliquefactionfeatures, including shaking-induced sandblows and dikes that fed them.Over several summer field seasons between 1990 and 1994, Cheryl andPat Munson, along with several of their students, searched ditchesand river banks for evidence of liquefaction. They found numerousbanks with shaking-induced sandblows and the dikes that fed them.This database includes the location of dikes thatthe Munsons and those with them observed and measured. Dike thicknesswas divided into 5 classes, 1 being the smallest at 0-4 cm, 2 = 5-14 cm,3...
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 years. This particulardata set is for horizontal spectral response acceleration for 0.2 secondperiod with a 2% probability of exceedance in 50 years. All ofthe maps were prepared by combining hazard derived from spatially-smoothed historic seismicity with hazard from fault-specific sources.The acceleration values contoured are the random horizontal component.The reference site condition is firm rock, defined as having an averageshear-wave velocity of 760 m/sec in the...
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This cover consists of location and size information for historicaland recent earthquakes that caused Modified Mercalli Intensity(MMI) VI (6) or higher in the map area. There were 26 earthquakesthat caused that level of damage. The most reknown are thefour earthquakes in the 1811- 1812 sequence; two on Dec 16,1811, and one each on Jan 23, 1812, and Feb 7, 1812. Theircalculated Moment Magnitudes were 8.1, 7.2, 7.8, and 8.0,respectively. The most recent damaging earthquake was on June 10,1987 near Olney, Illinois. It had a Moment Magnitude of 5.2.
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidence ofliquefaction. They found numerous banks with shaking-induced,pre-historic, earthquake induced sandblows and thedikes that fed them. This database shows where they searched.
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 years. This particulardata set is for horizontal spectral response acceleration for 1.0 secondperiod with a 10% probability of exceedance in 50 years. All ofthe maps were prepared by combining hazard derived from spatially-smoothed historic seismicity with hazard from fault-specific sources.The acceleration values contoured are the random horizontal component.The reference site condition is firm rock, defined as having an averageshear-wave velocity of 760 m/sec in the...
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Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidenceof prehistoric earthquake liquefaction.They found numerous banks with shaking-induced sandblows and thedikes that fed them. "liq94surv" shows where they searched.This database shows where additional areas were searchedin the summer of 1995.
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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This cover contains station locations of the New Madrid SeismicNetwork within the study boundary. The network is a cooperativeproject of Saint Louis University and Memphis State University.Operation of the network has been continuous since June 1975, butoperators have changed the network configuration throughout thattime period. The start and stop dates in the point attribute fileare not complete, but are included because they are useful for someof the stations.
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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NOTE: Location of one point, near -88.65, 38.95, was incorrectwhen Sheet A was published. The location is .5 degree south, andis corrected in this dataset.This cover contains locations of places where greatest horizontalcompressive stress (S(Hmax)) orientations havebeen determined either by observation of well-bore breakouts or wherefocal mechanism solutions have been determined from earthquakes.Well-bore breakouts are observed from 0 to 1.4 km, whereas earthquakesgenerally occur deeper. The earthquake focal mechanismsshow both reverse and strike-slip faulting. Overall the stressindicators show easterly trending S(Hmax).
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17025 = Clay, 17025 = Clay, All tags...
This digital map database consists of the ESRI ARC/INFO Version 7.0.2 coverages used to generate the plates in Professional Paper 1538-M (1994). Base-data is from 1:2,000,000-scale Digital Line Graph (DLG) data (roads, railroads, streams, water bodies, and international boundaries) and 1:100,000 scale DLG data (state and county boundaries).
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The northern part of the map area and large adjacent regions have been severely shaken by one or more moderate to large prehistoric earthquakes. The evidence of these takes the form of paleoliquefaction features, including shaking-induced sandblows and dikes that fed them. Over several summer field seasons between 1990 and 1994, Cheryl and Pat Munson, along with several of their students, searched ditches and river banks for evidence of liquefaction. They found numerous banks with shaking-induced sandblows and the dikes that fed them. This database includes the location of dikes that the Munsons and those with them observed and measured. Dike thickness was divided into 5 classes, 1 being the smallest at 0-4 cm,...
Categories: Web Site; Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
This cover contains the location of global positioning systemstations that are located within the project boundary. Several GPSnetworks with various monument spacings are being used to monitordeformation in parts or all of the Mississippi embayment. One networkis regional, and two of the network stations are located in westernKentucky within our map area.
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form ofpaleoliquefaction features, including shaking-induced sandblows anddikes that fed them.Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidenceof liquefaction. They found numerous dikes and sandblows.This database includes the locations and descriptions of dikes theyobserved and measured.The most widespread paleoliquefaction is attributed to amid-Holocene earthquake near what is now Vicennes, IN, with anestimated moment- magnitude of about 7.5. Stratigraphic,geomorphological,...
Tags: 1500 - Hazards, 1501 - Earthquakes, 17025 = Clay, 17047 = Edwards, 17055 = Franklin, All tags...
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Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 years. This particulardata set is for horizontal spectral response acceleration for 0.3 secondperiod with a 2% probability of exceedance in 50 years. All ofthe maps were prepared by combining hazard derived from spatially-smoothed historic seismicity with hazard from fault-specific sources.The acceleration values contoured are the random horizontal component.The reference site condition is firm rock, defined as having an averageshear-wave velocity of 760 m/sec in the...
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The 17 January 1994 Northridge, California, earthquake (M=6.7)triggered more than 11,000 landslides over an area of about 10,000km2. Most of the landslides were concentrated in a 1,000-km2 areathat includes the Santa Susana Mountains and the mountains north ofthe Santa Clara River valley. We mapped landslides triggered by theearthquake in the field and from 1:60,000-scale aerial photographyprovided by the U.S. Air Force and taken the morning of theearthquake; these were subsequently digitized and plotted in aGIS-based format, as shown on the accompanying maps (which also areaccessible via Internet). Most of the triggered landslides wereshallow (1-5 m), highly disrupted falls and slides in weaklycemented Tertiary...


map background search result map search result map Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Instrumental earthquake locations Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys between 1990 and 1994 in Indiana Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA050 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ050 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ250 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ250 Inventory of landslides triggered by the 1994 Northridge, California earthquake Seismotectonic maps in the vicintiy of New Madrid, Missouri database Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Damaging Earthquakes Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Seismograph Network station locations Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Global Positioning System stations Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations between 1990 and 1994 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations observed in 1995 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys in 1995 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction observations between 1990 and 1994 in Indiana Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Indiana Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Locations of stress orientations Geologic map of central (interior) Alaska: Digital data Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Global Positioning System stations Inventory of landslides triggered by the 1994 Northridge, California earthquake Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction observations between 1990 and 1994 in Indiana Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations between 1990 and 1994 in Illinois Geologic map of central (interior) Alaska: Digital data Seismotectonic maps in the vicintiy of New Madrid, Missouri database Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations observed in 1995 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Damaging Earthquakes Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys in 1995 in Illinois Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Locations of stress orientations Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Indiana Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys between 1990 and 1994 in Indiana Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Seismograph Network station locations Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Instrumental earthquake locations Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA050 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ050 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ250 Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ250