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
Mechanics of debris flows and debris-laden flash floods Mechanics of debris flows and debris-laden flash floods
A new mathematical model developed to predict behavior of debris flows and avalanches also holds promise for predicting behavior of debris-laden flash floods. The model assumes that debris flows behave as mixtures of interacting Newtonian fluids and Coulomb solids. Solid and fluid constituents obey three-dimensional mass and momentum balances, which are summed and depth-integrated to...
Authors
Richard M. Iverson, Roger P. Denlinger
A strategy for estimating tree canopy density using Landsat 7 ETM+ and high resolution images over large areas A strategy for estimating tree canopy density using Landsat 7 ETM+ and high resolution images over large areas
Forest cover is of great interest to a variety of scientific and land management applications, many of which require not only information on forest categories, but also tree canopy density. In previous studies, large area tree canopy density had been estimated at spatial resolutions of 1km or coarser using coarse resolution satellite images. In this study, a strategy is developed for...
Authors
Chengquan Huang, Limin Yang, Bruce K. Wylie, Collin G. Homer
Road log and stop descriptions; Day 2, Stop 7; East Stroudsburg railroad cut; Schoharie Formation and Onondaga Limestone; stratigraphy and structure Road log and stop descriptions; Day 2, Stop 7; East Stroudsburg railroad cut; Schoharie Formation and Onondaga Limestone; stratigraphy and structure
No abstract available.
Authors
C. A. Ver Straeten, J. D. Inners, Jack B. Epstein
Road log and stop descriptions; Day 1, Stop 6; High Point; overview of bedrock geology, geomorphology, and the Culvers Gap River Road log and stop descriptions; Day 1, Stop 6; High Point; overview of bedrock geology, geomorphology, and the Culvers Gap River
No abstract available.
Authors
Jack B. Epstein, Donald H. Monteverde, Ron W. Witte
Geologic controls of landslides in the Delaware Water Gap National Recreation Area, New Jersey-Pennsylvania, and Lehigh Gap, Pennsylvania Geologic controls of landslides in the Delaware Water Gap National Recreation Area, New Jersey-Pennsylvania, and Lehigh Gap, Pennsylvania
No abstract available.
Authors
Jack B. Epstein
Techniques for estimating sediment yield of ungaged tributaries on the southern Colorado Plateau Techniques for estimating sediment yield of ungaged tributaries on the southern Colorado Plateau
Numerous regional sediment transport data are used to evaluate three techniques for estimating streamflow sediment yield from ungaged tributaries of the Colorado River in Grand Canyon. These techniques include: (1) a regression equation relating drainage area to sediment yield for all relevant sediment-yield data from northern Arizona, (2) an empirical relation developed by Renard (1972)...
Authors
Robert Webb, Peter G. Griffiths, Daniel R. Hartley
Road log and stop descriptions; Day 1, Stop 3; Yards Creek pump-storage generating station; regional geology-Ordovician-Silurian unconformity, Taconic/Alleghanian deformation, and origin of slaty cleavage Road log and stop descriptions; Day 1, Stop 3; Yards Creek pump-storage generating station; regional geology-Ordovician-Silurian unconformity, Taconic/Alleghanian deformation, and origin of slaty cleavage
No abstract available.
Authors
Jack B. Epstein
Road log and stop descriptions; Day 1, Stop 2; Cold Air Cave Road log and stop descriptions; Day 1, Stop 2; Cold Air Cave
No abstract available.
Authors
Mitzi Kaiura, Jack B. Epstein
Use of the USDA Forest Service Geographic Information System for determining cover type use by white-tailed deer Use of the USDA Forest Service Geographic Information System for determining cover type use by white-tailed deer
Cover type use by white-tailed deer (Odocoileus virginianus dacotensis) in the central Black Hills of South Dakota was compared to the United States Department of Agriculture (USDA) Forest Service digital data using a Geographic Information System (GIS). Cover types were determined from observations of radiocollared deer and random locations and from corresponding point locations in the...
Authors
Christopher S. DePerno, Jonathan A. Jenks, Steven L. Griffin, Robert W. Klaver
RESIS–II — Making the reservoir survey information system complete and user friendly RESIS–II — Making the reservoir survey information system complete and user friendly
No abstract available.
Authors
Robert F. Stallard, David M. Mixon, David A. Kinner, Bruce B. Worstell
Distribution and characteristics of multi-sourced shock-metamorphosed quartz grains, Late Devonian Alamo Impact, Nevada Distribution and characteristics of multi-sourced shock-metamorphosed quartz grains, Late Devonian Alamo Impact, Nevada
No abstract available.
Authors
J. R. Morrow, C. A. Sandberg