United States Geological Survey YearbookThe Survey, 1987 - Forest reserves |
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Page 3
... measured at dis- tances as much as 120 miles laterally from the air gun . The refraction surveys provide important information on the velocity structure of the crust and , especially when used together with the reflection results ...
... measured at dis- tances as much as 120 miles laterally from the air gun . The refraction surveys provide important information on the velocity structure of the crust and , especially when used together with the reflection results ...
Page 4
... measured magnetic field are recorded on magnetic tape . Later , computer processing and plotting are used to produce maps ( fig . 3 ) . The magnetic properties and other geophysical information can be used to infer the distribution of ...
... measured magnetic field are recorded on magnetic tape . Later , computer processing and plotting are used to produce maps ( fig . 3 ) . The magnetic properties and other geophysical information can be used to infer the distribution of ...
Page 19
... measurements within the same hydrologic drainage basin to study soil permeability or soil erosion . The growing urban population has placed increased demands on the Nation's natural resources and the environment . Frequently , Federal ...
... measurements within the same hydrologic drainage basin to study soil permeability or soil erosion . The growing urban population has placed increased demands on the Nation's natural resources and the environment . Frequently , Federal ...
Page 27
... measured in a number of Jurassic diabase sheets . Results indicate that , under silicate fractionation conditions , plat- inum ( Pt ) is enriched slightly relative to palladium ( Pd ) in the early cumulate stage , whereas Pd is enriched ...
... measured in a number of Jurassic diabase sheets . Results indicate that , under silicate fractionation conditions , plat- inum ( Pt ) is enriched slightly relative to palladium ( Pd ) in the early cumulate stage , whereas Pd is enriched ...
Page 29
... measurement . Techniques to determine tin and bismuth at similar low levels are being developed based on the ion ... measured levels of heat 42 ° N Locked sections Free sections Figure 5. ( Significant Accomplishments of Research ...
... measurement . Techniques to determine tin and bismuth at similar low levels are being developed based on the ion ... measured levels of heat 42 ° N Locked sections Free sections Figure 5. ( Significant Accomplishments of Research ...
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activities Administration Alaska analysis aquifer areas Award basin Board Bureau Calcasieu River cartographic cartographic data Chief Hydrologist City City of w climate coal coastal Commission concentrations contamination cooperative Coordination County data base Denver Denver Federal Center Department of Public deposits Earth Science earthquake energy environment Environmental fiscal flow geographic information systems Geologic Division geologic map Geologist geophysical global change gram graphic ground water ground-water hazards hydrologic Hydrologist investigations Irrigation Lake Lake Nyos land located Management ment miles mineral resources National Center National Mapping Division natural Office organic Park percent Planning processes radon Regional Reston River rocks samples San Joaquin River scientific scientists sediment seismic selenium Service soils Stop streamflow studies surface tion Transportation U.S. Geological Survey United users USGS Valley Volcano Water Conservation District Water District water quality Water Resources water-quality wetlands zone