Skip to main content
U.S. flag

An official website of the United States government

Publications

Filter Total Items: 7220

Volcano monitoring at the U.S. Geological Survey's Hawaiian Volcano Observatory

The island of Hawaii has one of the youngest landscapes on Earth, formed by frequent addition of new lava to its surface.  Because Hawaiian are generally nonexplosive and easily accessible, the island has long attracted geologists interested in studying the extraordinary power of volcanic eruptions.  The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO), now nearing its 75th anniversary.
Authors
Christina C. Heliker, J. D. Griggs, T. Jane Takahashi, Thomas L. Wright

Multispectral digital image mapping of Antarctic ice features

Landsat multispectral images of the Antarctic ice sheet have been digitally enhanced by the US Geological Survey to show ice surface features not seen in earlier photographic products of the same scenes. Now for the first time it is worthwhile to prepare image maps at scales of up to 1:250 000 of ice sheet areas even where no nunataks are visible. Derivatives of the data can be stretched to bring
Authors
Charles Swithinbank, Baerbel K. Lucchitta

Earthquakes November-December 1985

No abstract available.
Authors
Waverly J. Person