Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5560
Emerging scientific tools for studies of water quality, coral reef health, and watershed management in the tropics/Caribbean Emerging scientific tools for studies of water quality, coral reef health, and watershed management in the tropics/Caribbean
No abstract available.
Authors
Sharon A. Fitzgerald
Measurement of sediment oxygen demand rates in the Mangrove Lagoon, Vessup Bay, and Benner Bay in southeastern St. Thomas, U.S. Virgin Islands Measurement of sediment oxygen demand rates in the Mangrove Lagoon, Vessup Bay, and Benner Bay in southeastern St. Thomas, U.S. Virgin Islands
No abstract available.
Authors
Orlando Ramos-Gines
Puerto Rico sources water assessment program Puerto Rico sources water assessment program
No abstract available.
Authors
Zuleima Rodriguez, Eva Hernandez, Orlando Ramos-Gines
Natural hazards on alluvial fans: the debris flow and flash flood disaster of December 1999, Vargas state, Venezuela Natural hazards on alluvial fans: the debris flow and flash flood disaster of December 1999, Vargas state, Venezuela
Large populations live on or near alluvial fans in locations such as Los Angeles, California, Salt Lake City, Utah, Denver, Colorado, and lesser known areas such as Sarno, Italy, and Vargas, Venezuela. Debris flows and flash floods occur episodically in these alluvial fan environments, and place many communities at high risk during intense and prolonged rainfall. In December 1999...
Authors
Matthew C. Larsen, Gerald F. Wieczorek, L.S. Eaton, Heriberto Torres-Sierra
An estimate of recoverable coal gas resources in the Powder River Basin, Wyoming An estimate of recoverable coal gas resources in the Powder River Basin, Wyoming
No abstract available.
Authors
Fred J. Crockett, Margaret S. Ellis, Gary D. Stricker, Greg Gunther, Allan M. Ochs, Romeo M. Flores
Hydrogeologic conditions in the upper aquifer of Puerto Rico, Manatí-Vega Baja area, as simulated by U.S. Geological Survey Modflow 96 Hydrogeologic conditions in the upper aquifer of Puerto Rico, Manatí-Vega Baja area, as simulated by U.S. Geological Survey Modflow 96
No abstract available.
Authors
G.S. Cherry
Utilizing Mars Digital Image Model (MDIM) and Mars Orbiter laser Altimeter (MOLA) data for photogrammetric control Utilizing Mars Digital Image Model (MDIM) and Mars Orbiter laser Altimeter (MOLA) data for photogrammetric control
The USGS is producing digital elevation models (DEM) and topographic maps of Mars at scales of 1:250,000 to 1:1,000,000. The initial source material will be Viking Orbiter images, with a later transition to Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) when stereo coverage from that source is available for topographic mapping. The digital terrain models and topographic maps...
Authors
Mark R. Rosiek, Randolph L. Kirk, Trent M. Hare, Elpitha Howington-Kraus
Report of the workshop on marine fossils and climate change Report of the workshop on marine fossils and climate change
No abstract available.
Authors
John A. Barron, Lloyd H. Burckle
Interactions between fire and invasive plants in temperate grasslands of North America Interactions between fire and invasive plants in temperate grasslands of North America
A substantial number of invasive grasses, forbs and woody plants have invaded temperate grasslands in North America. Among the invading species are winter annuals, biennials, cool-season perennials, warm-season perennials, vines, shrubs, and trees. Many of these species have been deliberately introduced and widely planted; some are still used for range improvement, pastures, lawns, and...
Authors
James B. Grace, Melinda D. Smith, S.L. Grace, Scott L. Collins, Thomas J. Stohlgren
Water quality assessment of the Eastern Iowa Basins: Basic water chemistry of rivers and streams, 1996-98 Water quality assessment of the Eastern Iowa Basins: Basic water chemistry of rivers and streams, 1996-98
The U.S. Geological Survey began data-collection activities in the Eastern Iowa Basins study unit of the National Water-Quality Assessment Program in September 1995 with the purpose of determining the status and trends in water quality of water from the Wapsipinicon, Cedar, Iowa, and Skunk River basins. From March 1996 through September 1998, monthly surface-water samples were collected...
Authors
Kimberlee K. Barnes