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Biological and physical processes
All continuing activities, functions, and phenomena associated with organisms and non-living matter.
Subtopics:
Atmospheric and climatic processes (87 items)
Ecological processes (85 items)
Fires (12 items)
Geologic processes (236 items)
Geochemical processes (9 items)
Ocean processes (16 items)
Physiological processes (9 items)
Hydrologic processes (161 items)
Evolution (1 items)
Impact cratering (3 items)
Results 11 - 20 of 521 listed by similarity [list alphabetically]
USGS develops geophysical methods to improve remediation monitoring and site characterization [New Window]
Short news article describing the use of electrical resistivity tomography to improve imaging of tracer flow in ground water.
Watershed processes and modeling [New Window]
Links to published materials produced by the Watershed Processes and Modeling Project on watershed model TOPMODEL, compilation of STATSGO soils data, climate change, landscape heterogeneity in ecoregions, and other links.
1915: Lassen's most recent eruption [New Window]
Summary of the most recent eruption of Lassen Peak, Cascades (1914-1917)
30 day animations of US daily streamflow maps [New Window]
Animated WaterWatch streamflow maps showing daily highs and lows.
A Devils Hole primer [New Window]
Plain-language questions and answers about the stable-isotopic record obtained from Devils Hole, a cave in south-central Nevada. The data do not agree with the Milankovitch hypothesis concerning the causes of glacial cycles in climate change.
PDF A science strategy to support management decisions related to hypoxia in the northern Gulf Of Mexico and excess nutrients in the Mississippi River Basin [New Window]
The report describes a strategy for monitoring, modeling, and research activities to support management decisions to improve water-quality conditions in the Mississippi River Basin, reduce hypoxia in the northern Gulf of Mexico, and improve conditions for
ANSS - Advanced National Seismic System [New Window]
Nationa network of seismic monitoring stations coordinated with a variety of regional organizations and academic institutions.
Acid rain and our Nation's Capital [New Window]
This booklet focuses on acid rain and its impact on our Nation's capital.
Acute toxicity database [New Window]
The following database summarizes the results from aquatic acute toxicity tests conducted by the USGS CERC located in Columbia, Missouri.
Alaska Volcano Observatory [New Window]
Homepage for Alaska Volcano Observatory (AVO) with offices in Anchorage and Fairbanks monitors and studies Alaska's hazardous volcanoes. Links to featured news, updates, publications and products, and a volcano atlas for Alaska.
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