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Earth sciences
Broad term for all science related to the study of the earth.
Subtopics:
Atmospheric sciences (44 items)
Geochemistry (175 items)
Geography (159 items)
Geology (469 items)
Geophysics (116 items)
Glaciology (8 items)
Hydrology (410 items)
Limnology (19 items)
Ocean sciences (51 items)
Paleontology (21 items)
Soil sciences (5 items)
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Results 81 - 90 of 1280 listed by similarity [list alphabetically]
1999 resource assessment of selected Tertiary coal beds and zones in the northern Rocky Mountains and Great Plains region. [More info]
Coal resources, stratigraphy, geochemistry, coal quality and geology of Tertiary coal beds and zones in the northern Rocky Mountains and Great Plains regions. Text in PDF format and available on CD-ROM.
PDF 2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA) [More info]
We estimate mean volumes of 896 million barrels of oil and about 53 trillion cubic feet of nonassociated natural gas in conventional, undiscovered accumulations within this area, a reduction of our 2002 estimate due to new geologic information.
30 cool facts about Mount St. Helens [More info]
Poster commemorating the 30th anniversary of the 1980 eruptions of Mount St. Helens, a volcano in southwestern Washington state. Facts provided in plain text as well.
PDF A Climate Trend Analysis of Burkina Faso [More info]
Summer rains have remained steady over the past 20 years, but are less than historic highs. Temperature has increased, and while the farmland per person is decreasing, population growth has been offset with improved yields.
PDF A climate trend analysis of Chad [More info]
Long-term reduction in rainfall and increasing temperature threaten Chad's future food production prospects; combined with rapid population growth and zones of substantial conflict, increasing numbers of people will be at risk.
PDF A climate trend analysis of Ethiopia [More info]
Recent trends in March-June, June-September, and March-September rainfall and temperature, identifying significant reductions in rainfall and increases in temperature over time in this area.
PDF A climate trend analysis of Mali [More info]
Summer rains have remained steady for the past 20 years, but are below the long-term average. Current population and agricultural trends indicate increasing yields have offset population expansion, keeping per capita cereal production steady.
PDF A Climate Trend Analysis of Niger [More info]
While summer rains have increased during the past 20 years, temperatures have increased as well, amplifying the effects of droughts. Crop yields are low but the population is growing, pointing to rising food insecurity.
PDF A climate trend analysis of Senegal [More info]
Modest declines in rainfall, accompanied by increases in air temperatures, declining farmland per person, along with trends in population and agriculture could lead to a 30% reduction in per capita cereal production by 2025.
PDF A climate trend analysis of Sudan [More info]
The data shown here depict drying trends in one of the world's most food insecure regions. Decreasing rainfall since 1980 accompanied increases in air temperature greater than global warming.
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