Publications
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2006 volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, and volcanic unrest at or near nine separate volcanic centers in Alaska during 2006. A significant explosive eruption at Augustine Volcano in Cook Inlet marked the first eruption within several hundred kilometers of principal population centers in Alaska since 1992. Glaciated Fourpeaked Mountain, a volcano thought to
Authors
Christina A. Neal, Robert G. McGimsey, James P. Dixon, Alexander Manevich, Alexander Rybin
Carbon sequestration to mitigate climate change
Human activities, especially the burning of fossil fuels such as coal, oil, and gas, have caused a substantial increase in the concentration of carbon dioxide (CO2) in the atmosphere. This increase in atmospheric CO2 - from about 280 to more than 380 parts per million (ppm) over the last 250 years - is causing measurable global warming. Potential adverse impacts include sea-level rise; increased f
Authors
Eric Sundquist, Robert Burruss, Stephen Faulkner, Robert Gleason, Jennifer Harden, Yousif Kharaka, Larry Tieszen, Mark Waldrop
4th EGU Alexander von Humboldt conference - the Andes: challenge for geosciences
No abstract available.
Authors
P. Fabian, R. Garreau, Christoph Schneider, Robert I. Tilling
Magnetic monitoring of earth and space
For centuries, navigators of the world’s oceans have been familiar with an effect of Earth’s magnetic field: It imparts a directional preference to the needle of a compass. Although in some settings magnetic orientation remains important, the modern science of geomagnetismhas emerged from its romantic nautical origins and developed into a subject of great depth and diversity. The geomagnetic field
Authors
Jeffrey J. Love
On developing thermal cave detection techniques for earth, the moon and mars
The purpose of this study is to (1) demonstrate the viability of detecting terrestrial caves at thermal-infrared wavelengths, (2) improve our understanding of terrestrial cave thermal behavior, (3) identify times of day when cave openings have the maximum thermal contrast with the surrounding surface regolith, and (4) further our understanding of how to detect caves on Earth, the Moon and Mars. We
Authors
J. Judson Wynne, Timothy N. Titus, Guillermo Chong Diaz
North polar region of Mars: Advances in stratigraphy, structure, and erosional modification
We have remapped the geology of the north polar plateau on Mars, Planum Boreum, and the surrounding plains of Vastitas Borealis using altimetry and image data along with thematic maps resulting from observations made by the Mars Global Surveyor, Mars Odyssey, Mars Express, and Mars Reconnaissance Orbiter spacecraft. New and revised geographic and geologic terminologies assist with effectively disc
Authors
Kenneth L. Tanaka, J. Alexis P. Rodriguez, James A. Skinner, Mary C. Bourke, Corey M. Fortezzo, Kenneth E. Herkenhoff, Eric J. Kolb, Chris Okubo
Landslide hazard mitigation in North America
Active landslides throughout the states and territories of the United States result in extensive property loss and 25-50 deaths per year. The U.S. Geological Survey (USGS) has a long history of detailed examination of landslides since the work of Howe (1909) in the San Juan Mountains of Colorado. In the last four decades, landslide inventory maps and landslide hazard maps have depicted landslides
Authors
G. F. Wieczorek, P.P. Leahy
Determining Titan's spin state from Cassini RADAR images
For some 19 areas of Titan's surface, the Cassini RADAR instrument has obtained synthetic aperture radar (SAR) images during two different flybys. The time interval between flybys varies from several weeks to two years. We have used the apparent misregistration (by 10-30 km) of features between separate flybys to construct a refined model of Titan's spin state, estimating six parameters: north pol
Authors
B.W. Stiles, Randolph L. Kirk, R. D. Lorenz, S. Hensley, E. Lee, S.J. Ostro, M.D. Allison, P.S. Callahan, Y. Gim, L. Iess, P.P. Del Marmo, G. Hamilton, W.T.K. Johnson, R.D. West
Hydrocarbon lakes on Titan: Distribution and interaction with a porous regolith
Synthetic Aperture Radar (SAR) images of Titan's north polar region reveal quasi‐circular to complex features which are interpreted to be liquid hydrocarbon lakes. We investigate methane transport in Titan's hydrologic cycle using the global distribution of lake features. As of May 2007, the SAR data set covers ∼22% of the surface and indicates multiple lake morphologies which are correlated acros
Authors
A. Hayes, O. Aharonson, P. Callahan, C. Elachi, Y. Gim, Randolph L. Kirk, K. Lewis, R. Lopes, R. Lorenz, J. Lunine, Ken Mitchell, Giuseppe Mitri, E. Stofan, S. Wall
Climate-induced variations of geyser periodicity in Yellowstone National Park, USA
The geysers of Yellowstone National Park, United States, attract millions of visitors each year, and their eruption dynamics have been the subject of extensive research for more than a century. Although many of the fundamental aspects associated with the dynamics of geyser eruptions have been elucidated, the relationship between external forcing (Earth tides, barometric pressure, and precipitation
Authors
Shaul Hurwitz, Ashish Kumar, Ralph Taylor, Henry Heasler
Soil sedimentology at Gusev Crater from Columbia Memorial Station to Winter Haven
A total of 3140 individual particles were examined in 31 soils along Spirit's traverse. Their size, shape, and texture were quantified and classified. They represent a unique record of 3 years of sedimentologic exploration from landing to sol 1085 covering the Plains Unit to Winter Haven where Spirit spent the Martian winter of 2006. Samples in the Plains Unit and Columbia Hills appear as reflecti
Authors
N.A. Cabrol, Kenneth E. Herkenhoff, R. Greeley, E.A. Grin, C. Schroder, C. d'Uston, C. Weitz, R.A. Yingst, B. A. Cohen, Jeff Moore, A. Knudson, B. Franklin, R. C. Anderson, R. Li