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Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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USGS1997

Publications of the U.S. Geological Survey, 1997

This catalog is a list of (1) books and maps that were published during 1997 and (2) articles by U.S. Geological Survey personnel in non-U.S. Geological Survey journals and books that came to our attention in 1997; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961,'' "Publications of the Geological Survey, 1962-1970," and "Publications of the U.S. Geological Survey, 1971 through 1981."

Publications of the US Geological Survey↗
USGS1999

Publications of the U.S. Geological Survey, 1998

This catalog is a list of (1) books and maps that were published during 1998 and (2) articles by U.S. Geological Survey personnel in non-U.S. Geological Survey journals and books that came to our attention in 1998; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961," "Publications of the Geological Survey, 1962-1970," and "Publications of the U.S. Geological Survey, 1971 through 1981."

Publications of the US Geological Survey↗
USGS2000

Publications of the U.S. Geological Survey, 1999

This catalog is a list of (1) books and maps that were published during 1998 and (2) articles by U.S. Geological Survey personnel in non-U.S. Geological Survey journals and books that came to our attention in 1998; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961," "Publications of the Geological Survey, 1962-1970," and "Publications of the U.S. Geological Survey, 1971 through 1981."

Publications of the US Geological Survey↗
USGS2001

Publications of the U.S. Geological Survey, 2000

This catalog is a list of (1) books and maps that were published during 2000 and (2) articles by U.S. Geological Survey personnel in non-U.S. Geological Survey journals and books that came to our attention in 2000; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961," "Publications ofthe Geological Survey, 1962-1970," and "Publications of the U.S. Geological Survey, 1971 through 1981."

Publications of the US Geological Survey↗
USGS1983

Publications of the Geological Survey, 1982

This catalog is a list of (1) books and maps that were published during 1982, and (2) articles by Geological Survey personnel in non-Geological Survey journals and books that came to our attention in 1982; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961" and "Publications of the Geological Survey, 1962-1970."

Publications of the US Geological Survey↗
USGS1986

Publications of the U.S. Geological Survey, 1985

This catalog is a list of (1) books and maps that were published in 1985, and (2) articles by Geological Survey personnel in non-Geological Survey journals and books that came to our attention in 1985; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961"; "Publications of the Geological Survey, 1962-1970"; and "Publications of the U.S. Geological Survey, 1971-1981."

Publications of the US Geological Survey↗
USGS2025

The USGS National Geologic Map Database – Resource for geoscience professionals and the public

Since 1996, the US Geological Survey (USGS) National Geologic Map Database (NGMDB) has served the public and private sectors and is widely recognized as one of the few authoritative resources for the information published by the nation’s geological surveys. On a monthly basis, the NGMDB website receives more than 600,000 visits by about 200,000 users (~20,000 visits per day). In a typical month, between 2 and 3 TB of content are viewed or downloaded. This high level of web traffic results in many user requests for information and assistance. Users vary widely in interest and background and include homeowners, students, local government planners, and professional geologists and engineers. Many professionals use NGMDB information for understanding natural conditions that affect infrastructure, such as drainage, ground stability, properties of near-surface earth materials, and depth to rock.

Conference Paper↗
USGS2015

Geospatial resources for the geologic community: The USGS National Map

Geospatial data are a key component of investigating, interpreting, and communicating the geological sciences. Locating geospatial data can be time-consuming, which detracts from time spent on a study because these data are not obviously placed in central locations or are served from many disparate databases. The National Map of the US Geological Survey is a publicly available resource for accessing the geospatial base map data needs of the geological community from a central location. The National Map data are available through a viewer and download platform providing access to eight primary data themes, plus the US Topo and scanned historical topographic maps. The eight themes are elevation, orthoimagery, hydrography, geographic names, boundaries, transportation, structures, and land cover, and they are being offered for download as predefined tiles in formats supported by leading geographic information system software. Data tiles are periodically refreshed to capture the most current content and are an efficient method for disseminating and receiving geospatial information. Elevation data, for example, are offered as a download from the National Map as 1° × 1° tiles for the 10- and 30- m products and as 15′ × 15′ tiles for the higher-resolution 3-m product. Vector data sets with smaller file sizes are offered at several tile sizes and formats. Partial tiles are not a download option—any prestaged data that intersect the requesting bounding box will be, in their entirety, part of the download order. While there are many options for accessing geospatial data via the Web, the National Map represents authoritative sources of data that are documented and can be referenced for citation and inclusion in scientific publications. Therefore, National Map products and services should be part of a geologist’s first stop for geospatial information and data.

Journal of Geology↗
USGS2024

Seismic velocity changes from repetitive seismicity at Mauna Loa prior to and during its 2022 eruption

Mauna Loa’s short-lived eruption from late November to early December 2022 marked the culmination of nearly a decade of elevated seismic activity and geodetic inflation. The volcano has been monitored by a network of permanent, short period and broadband seismometers. I used the continuous waveform data from that network starting in 2012 to generate a catalog of seismicity that enhances the US Geological Survey Hawaiian Volcano Observatory’s public seismic catalog with four times the number of earthquakes, which were then grouped by waveform similarity. Analysis of subtle delays in the timing of arrivals of scattered waves between pairs of earthquakes in this catalog yields a history of small changes in the shallow seismic velocity structure of the volcano. Seismic velocities have been shown at other volcanoes to change during unrest and eruption. My results show a decrease in seismic velocity centered on the summit beginning in September 2022, corresponding to the onset of a vigorous precursory swarm of seismic activity and shallow inflation. During the eruption itself, I observe large changes due likely to dike opening along the northeast rift zone and deflation of the summit reservoir. However, seismic velocity changes associated with non-volcanic sources such as ground shaking from large earthquakes and meteorological influences at seasonal and diurnal time scales are also observed, and these dominate the velocity changes prior to the eruption. Proper accounting of these effects will be a requirement for use in real-time monitoring, and this work serves as a starting point in that endeavor for Mauna Loa.

Hawaii↗