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"The National Oceanic and Atmospheric Administration (NOAA), through its National Environmental Satellite, Data, and Information Service (NESDIS), has the responsibility for the collection, management, and dissemination of many kinds of data resulting from man's inquiry into his environment"--Introduction
"This catalog summarizes geophysical and geological data available for the National Petroleum Reserve in Alaska (NPRA). Although the geographical scope of the data in this catalog is limited, similar data bases for other areas of interest to the exploration community also are archived by NGDC. Data holdings include those from the disciplines of seismics (reflection and refraction), gravity, magnetics, topography, well logs, geothermics, and earthquake seismology. NGDC encourages private industry initiatives in the use of these data, and welcomes cooperative projects with governmental agencies, non-profit organizations, and universities"--Foreword
"Seismograms provide the seismologist the most efficient means of 'looking' into the most inaccessible regions of the Earth--the Earth's interior. Geophysical studies based on seismograms have drawn a vivid picture of a planet that has a solid inner core about 1250-km radius, a fluid outer core about 3470-km radius, a mantle about 2900 km thick, and a crust about 30 km thick. Other studies have pinpointed areas of high earthquake risk, where the buildings in which we live and work must be constructed to resist damaging earthquake motion. Further, the methods devised to describe Earth's internal structure have been used by many others to search for rich deposits of oil and minerals beneath its surface and its oceans"--Introduction.