Publications
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Volcano crisis response at Yellowstone volcanic complex - after-action report for exercise held at Salt Lake City, Utah, November 15, 2011
A functional tabletop exercise was run on November 14-15, 2011 in Salt Lake City, Utah, to test crisis response capabilities, communication protocols, and decision-making by the staff of the multi-agency Yellowstone Volcano Observatory (YVO) as they reacted to a hypothetical exercise scenario of accelerating volcanic unrest at the Yellowstone caldera. The exercise simulated a rapid build-up of sei
Authors
Thomas C. Pierson, Carolyn L. Driedger, Robert I. Tilling
The utility of atmospheric analyses for the mitigation of artifacts in InSAR
The numerical weather models (NWMs) developed by the meteorological community are able to provide accurate analyses of the current state of the atmosphere in addition to the predictions of the future state. To date, most attempts to apply the NWMs to estimate the refractivity of the atmosphere at the time of satellite synthetic aperture radar (SAR) data acquisitions have relied on predictive model
Authors
James Foster, John Kealy, Tiziana Cherubini, S. Businger, Zhong Lu, Michael Murphy
Abstracts for the October 2012 meeting on Volcanism in the American Southwest, Flagstaff, Arizona
Though volcanic eruptions are comparatively rare in the American Southwest, the States of Arizona, Colorado, New Mexico, Nevada, and Utah host Holocene volcanic eruption deposits and are vulnerable to future volcanic activity. Compared with other parts of the western United States, comparatively little research has been focused on this area, and eruption probabilities are poorly constrained. Monit
Authors
Jacob B. Lowenstern
The ongoing Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawaiʻi: 30 years of eruptive activity
The Puʻu ʻŌʻō eruption of Kīlauea Volcano is its longest rift-zone eruption in more than 500 years. Since the eruption began in 1983, lava flows have buried 48 square miles (125 square kilometers) of land and added about 500 acres (200 hectares) of new land to the Island of Hawaiʻi. The eruption not only challenges local communities, which must adapt to an ever-changing and sometimes-destructive e
Authors
Tim R. Orr, Christina Heliker, Matthew R. Patrick
Volcanic earthquakes in Alaska's national parks
Alaska’s national parks contain 11 historically active
volcanoes (Figure 2), which produce thousands of small
earthquakes every year. These earthquakes are voices
of the magmatic and geothermal systems within the
volcanoes. The Alaska Volcano Observatory (AVO), a
joint program of the U.S. Geological Survey, the Geophysical
Institute at the University of Alaska Fairbanks,
and the Alaska Division of
Authors
Stephanie G. Prejean, Seth C. Moran, John A. Power, Michael J. West
Empirical estimates to reduce modeling uncertainties of soil organic carbon in permafrost regions: a review of recent progress and remaining challenges
The vast amount of organic carbon (OC) stored in soils of the northern circumpolar permafrost region is a potentially vulnerable component of the global carbon cycle. However, estimates of the quantity, decomposability, and combustibility of OC contained in permafrost-region soils remain highly uncertain, thereby limiting our ability to predict the release of greenhouse gases due to permafrost tha
Authors
U. Mishra, J.D. Jastrow, R. Matamala, G. Hugelius, C.D. Koven, Jennifer W. Harden, S.L. Ping, G.J. Michaelson, Z. Fan, R.M. Miller, A. D. McGuire, C. Tarnocai, P. Kuhry, W.J. Riley, K. Schaefer, E.A.G. Schuur, M.T. Jorgenson, L. D. Hinzman
Permafrost and organic layer interactions over a climate gradient in a discontinuous permafrost zone
Permafrost is tightly coupled to the organic soil layer, an interaction that mediates permafrost degradation in response to regional warming. We analyzed changes in permafrost occurrence and organic layer thickness (OLT) using more than 3000 soil pedons across a mean annual temperature (MAT) gradient. Cause and effect relationships between permafrost probability (PF), OLT, and other topographic fa
Authors
Kristofer D. Johnson, Jennifer W. Harden, A. David McGuire, Mark Clark, Fengming Yuan, Andrew O. Finley
Geologic map of Oldonyo Lengai (Oldoinyo Lengai) Volcano and surroundings, Arusha Region, United Republic of Tanzania
The geology of Oldonyo Lengai volcano and the southernmost Lake Natron basin, Tanzania, is presented on this geologic map at scale 1:50,000. The map sheet can be downloaded in pdf format for online viewing or ready to print (48 inches by 36 inches).
A 65-page explanatory pamphlet describes the geologic history of the area. Its goal is to place the new findings into the framework of previous inves
Authors
David R. Sherrod, Masota M. Magigita, Shimba Kwelwa
Chronology of Eocene-Miocene sequences on the New Jersey shallow shelf: implications for regional, interregional, and global correlations
Integrated Ocean Drilling Program Expedition 313 continuously cored and logged latest Eocene to early-middle Miocene sequences at three sites (M27, M28, and M29) on the inner-middle continental shelf offshore New Jersey, providing an opportunity to evaluate the ages, global correlations, and significance of sequence boundaries. We provide a chronology for these sequences using integrated strontium
Authors
James V. Browning, Kenneth G. Miller, Peter J. Sugarman, John Barron, Francine M.G. McCarthy, Denise K. Kulhanek, Miriam E. Katz, Mark D. Feigenson
Using age of colonizing douglas-fir for the dating of young geomorphic surfaces: a case study
Dating of many types of young (
Authors
Thomas C. Pierson
Nyamulagira’s magma plumbing system inferred from 15 years of InSAR
Nyamulagira, located in the east of the Democratic Republic of Congo on the western branch of the East African rift, is Africa’s most active volcano, with an average of one eruption every 3 years since 1938. Owing to the socio-economical context of that region, the volcano lacks ground-based geodetic measurements but has been monitored by interferometric synthetic aperture radar (InSAR) since 1996
Authors
Christelle Wauthier, Valérie Cayol, Michael P. Poland, François Kervyn, Nicolas D'Oreye, Andrew Hooper, Sergei Samsonov, Kristy Tiampo, Benoit Smets
Very long period conduit oscillations induced by rockfalls at Kilauea Volcano, Hawaii
Eruptive activity at the summit of Kilauea Volcano, Hawaii, beginning in 2010 and continuing to the present time is characterized by transient outgassing bursts accompanied by very long period (VLP) seismic signals triggered by rockfalls from the vent walls impacting a lava lake in a pit within the Halemaumau pit crater. We use raw data recorded with an 11-station broadband network to model the so
Authors
Bernard A. Chouet, Phillip B. Dawson