Publications
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Post-Wildfire Sedimentation in Saguaro National Park, Rincon Mountain District, and Effects on Lowland Leopard Frog Habitat
The Rincon Mountain District of Saguaro National Park occupies about 272 square kilometers of mountains, canyons, and alluvial fans in southeastern Arizona just east of Tucson. The park contains some of the last remaining habitat in the Tucson Basin of the lowland leopard frog that lives in the bedrock pools called tinajas in canyons at elevations between 850 and 1,800 meters. Those tinajas that c
Authors
John T.C. Parker
Reconnaissance investigation of Caribbean extreme wave deposits — Preliminary observations, interpretations, and research directions
This report presents an overview of preliminary geological investigations and recommended future research activities in the Caribbean region pertaining to coastal hazards with an emphasis on establishing tsunami risk for U.S. territories. Fieldwork was conducted in March 2006 on the islands of Bonaire, Puerto Rico, and Guadeloupe to evaluate the stratigraphic records of extreme wave deposits as p
Authors
Robert A. Morton, Bruce M. Richmond, Bruce E. Jaffe, Guy Gelfenbaum
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2005
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at historically active volcanoes in Alaska since 1988 (Figure 1). The primary objectives of the seismic program are the real-time seismic
Authors
James P. Dixon, Scott D. Stihler, John A. Power, Guy Tytgat, Steve Estes, Stephen R. McNutt
Evaluation of some software measuring displacements using GPS in real-time
For the past decade, the USGS has been monitoring deformation at various locations in the western United States using continuous GPS. The main focus of these measurements are estimates of displacement averaged over one day. Essentially, these consist of recording at 30 seconds intervals the carrier-frequency phase-data (equivalent to travel-time) between a GPS receiver and the GPS satellite networ
Authors
John Langbein
Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America
No abstract available.
Authors
S.K. Clark, M. K. Reagan, D.A. Trimble
Volcanic hazards in Central America
This volume is a sampling of current scientific work about volcanoes in Central America with specific application to hazards. The papers reflect a variety of international and interdisciplinary collaborations and employ new methods. The book will be of interest to a broad cross section of scientists, especially volcanologists. The volume also will interest students who aspire to work in the field
Topomapping of Mars with HRSC Images, ISIS, and a commercial stereo workstation
We demonstrate that the freely available USGS planetary cartography software package ISIS and the commercial photogrammetric software SOCET SET jointly provide a complete environment for the processing of Mars Express High Resolution Stereo Camera (HRSC) images. Capabilities include bundle adjustment, automated production and interactive editing of stereo digital terrain models (DTMs), orthomosaic
Authors
Randolph L. Kirk, Elpitha Howington-Kraus, Donna M. Galuszka, Bonnie L. Redding, Trent M. Hare
Photographs, correspondence, and presentations related to the La Conchita, California, landslide
This report contains the following photographs and information related to the La Conchita, California, landslide: 1) Digital photographs taken by the author during a visit to the La Conchita landslide on January 14, 2005. 2) Correspondence related to the approval and release of USGS Open-File Report 2005-1067, Landslide Hazards at La Conchita, California. 3) A presentation on the La Conchita lands
Authors
Randall W. Jibson
Hawaiian Volcano Observatory seismic data, January to December 2005
The Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered during the year. The seismic summary is offered without interpretation as a source of preliminary data. It is complete in the sense that most data for events of M-1.5 routinely gathered by the Observatory are included.
The HVO summaries have been published in various forms since 1956. Summaries prior to 1974 were issu
Authors
Jennifer S. Nakata
Abstracts of the Annual Meeting of Planetary Geologic Mappers, Nampa, Idaho 2006
Approximately 18 people attended this year's mappers meeting, and many more submitted abstracts and maps in absentia. The meeting was held on the campus of Northwest Nazarene University (NNU), and was graciously hosted by NNU's School of Health and Science. Planetary mapper Dr. Jim Zimbelman is an alumnus of NNU, and he was pivotal in organizing the meeting at this location. Oral and poster presen
Authors
Kenneth L. Tanaka, R. Stephen Saunders
Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California
The Coso geothermal field, located along the Eastern California Shear Zone, is composed of fractured granitic rocks above a shallow heat source. Temperatures exceed 640 ?F (~338 ?C) at a depth of less than 10000 feet (3 km). Permeability varies throughout the geothermal field due to the competing processes of alteration and mineral precipitation, acting to reduce the interconnectivity of faults an
Authors
C.A. Morrow, D. A. Lockner