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: 5518
VS30 – A site-characterization parameter for use in building Codes, simplified earthquake resistant design, GMPEs, and ShakeMaps VS30 – A site-characterization parameter for use in building Codes, simplified earthquake resistant design, GMPEs, and ShakeMaps
VS30, defined as the average seismic shear-wave velocity from the surface to a depth of 30 meters, has found wide-spread use as a parameter to characterize site response for simplified earthquake resistant design as implemented in building codes worldwide. VS30 , as initially introduced by the author for the US 1994 NEHRP Building Code, provides unambiguous definitions of site classes...
Authors
Roger D. Borcherdt
Nearshore bathymetric evolution on a high-energy beach during the 2009-10 El Nino winter Nearshore bathymetric evolution on a high-energy beach during the 2009-10 El Nino winter
The nearshore bathymetric evolution of a high-energy beach at the mouth of San Francisco Bay, California (USA), was tracked before, during, and after the powerful El Niño winter of 2009-10 to quantify alongshore bar formation and migration as well as the magnitude and alongshore variability of cross-shore transport. The observed deep-water winter wave energy was among the highest ever...
Authors
Patrick L. Barnard, Daniel J. Hoover, Jeffrey A. Hansen
A transect across the basement massifs of the central Green Mountains, Vermont A transect across the basement massifs of the central Green Mountains, Vermont
No abstract available.
Authors
Gregory J. Walsh, Nicholas M. Ratcliffe, Michael J. Kunk
The role of backbarrier infilling in the formation of barrier island systems The role of backbarrier infilling in the formation of barrier island systems
Barrier islands develop through a variety of processes, including spit accretion, barrier elongation, and inlet filling. New geophysical and sedimentological data provide a means of documenting the presence of a paleoinlet within a barrier lithosome in the western Gulf of Maine, illuminating the process of backbarrier infilling and its effect on barrier and tidal inlet morphodynamics...
Authors
Christopher J. Hein, Duncan M. FitzGerald, Emily A. Carruthers, Byron D. Stone, Allen M. Gontz
Revelations from ambient shaking data of a recently instrumented unique building at MIT campus Revelations from ambient shaking data of a recently instrumented unique building at MIT campus
A state-of-the-art seismic monitoring system comprising 36 accelerometers and a data-logger with real-time capability was recently installed at Building 54 on the campus of the Massachusetts Institute of Technology [MIT], Cambridge, Massachusetts. The system is designed to record translational, torsional and rocking motions, and to facilitate computation of drift between select pairs of...
Authors
Mehmet Celebi, N. Toksoz, O. Buyukozturk
Seismic monitoring of structures and new developments Seismic monitoring of structures and new developments
No abstract available.
Authors
Mehmet Celebi
Lithogeochemistry of the Devonian Popovich Formation in the northern Carlin Trend, Nevada Lithogeochemistry of the Devonian Popovich Formation in the northern Carlin Trend, Nevada
No abstract available.
Authors
Albert H. Hofstra, William Christiansen, B Pamela Zohar, Gilles Tousignant
Traverse of the major fault systems of the Taconian deformational front, the Vermont Valley and core of the Green Mountain massif, southern Vermont Traverse of the major fault systems of the Taconian deformational front, the Vermont Valley and core of the Green Mountain massif, southern Vermont
No abstract available.
Authors
Nicholas M. Ratcliffe, Michael J. Kunk, William C. Burton, Gregory J. Walsh
Far from superficial: microbial diversity associated with the skin and mucus of fish Far from superficial: microbial diversity associated with the skin and mucus of fish
During horizontal or water-borne infection involving an obligate pathogen (e.g. – Aeromonas salmonicida, cause of furunculosis), the pathogen interacted with and influenced the microbial diversity of the dermal mucus of fish. Prior to infection, the prevalent bacterial flora cultured from juvenile Atlantic salmon (Salmo salar) included Pseudomonas fluorescens, Comomonas terrigenia...
Authors
Rocco C. Cipriano, Alistair Dove
Geophysical expression of elements of the Rio Grande rift in the northeast Tusas Mountains - Preliminary interpretations Geophysical expression of elements of the Rio Grande rift in the northeast Tusas Mountains - Preliminary interpretations
New interpretations of the nature of the Rio Grande rift and pre-existing rocks in the northeast Tusas Mountains region are derived from new and existing gravity and aeromagnetic data. 12-15 mGal amplitude gravity lows are interpreted to mainly reflect large thicknesses of the upper Oligocene to upper Miocene, syn-rift Los Pinos Formation and possibly significant amounts of the Eocene El...
Authors
Benjamin J. Drenth, Kenzie J. Turner, Ren A. Thompson, V. J. Grauch, Michael A. Cosca, John Lee
Historical catch, age structure, sizes, and relative growth for an introduced population of blue catfish in Lake Oconee, GA Historical catch, age structure, sizes, and relative growth for an introduced population of blue catfish in Lake Oconee, GA
No abstract available.
Authors
Cecil A. Jennings, Michael D. Homer