Geophysical maps

Information resources about both Maps and atlases and Geophysics

Results listed alphabetically by title.

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ050

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 y

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Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ250

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 y

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Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ050

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 y

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Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ250

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 y

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Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ050

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 y

Info
Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ250

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 y

Info
Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA050

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 y

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Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA250

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 y

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Seismotectonic maps in the vicintiy of New Madrid, Missouri database

This digital map database consists of the ESRI ARC/INFO Version 7.0.3 coverages used to generate the maps in Map Series MF-2264 A to E (Rhea and Wheeler, 1994a,b, Rhea and others, 1994, Wheeler and Rhea, 1994, Wheeler and others, 1994) and I-2521 (Rhea an

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Gravity and ground magnetic data from selected traverses in the Amargosa desert and vicinity, Nevada and California

Maps of aeromagnetic data and a table of gravity station data embedded in the PDF report, not as separate files

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Isostatic Gravity Map of the Death Valley Ground-Water Model Area, Nevada and California

An isostatic gravity map of the Death Valley groundwater model area was prepared from over 40,0000 gravity stations as part of an interagency effort by the U.S. Geological Survey and the U.S. Department of Energy to help characterize the geology and hydro

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Ground-magnetic studies of the Amargosa desert region, California and Nevada

Hand-held magnetometer and sample magnetic susceptibility measurements used to help interpret complex patterns in the magnetic anomaly of this area.

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Elements of infrastructure and seismic hazard in the central United States - Database

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,

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Geology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale

The data in this CD-ROM are based on a mineral resource assessment of the Venezuelan Guayana Shield, conducted between 1987 and 1991 by the U.S. Geological Survey and Corporaci—n Venezolana de Guayana, TŽcnica Minera, (USGS, 1993). The Venezuelan Shiel

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Gravity map and data of the eastern half of the Big Bear Lake 100,000 scale quadrangle, California and analysis of the depths of several basins.

An isostatic residual gravity map of the Big Bear Lake 100,000 scale quadrangle, California was prepared and then this data set used with other information to compute the configuration of several ground water basins. Basin thickness maps were then prepare

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Isostatic gravity map of the Los Angeles 30 x 60 minute quadrangle, California

Gravity data were compiled, collected, and edited to produce an isostatic gravity map of the Los Angeles 30 x 60 minute quadrangle, California. This record focuses primarily on the principal facts, that is, gravity observations, and the corrections made

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