Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16744
The 1974 Iceland Glaciological Society spring expedition to Vatnajokull The 1974 Iceland Glaciological Society spring expedition to Vatnajokull
From 25 May to 3 June 1974, the Iceland Glaciological Research Society undertook an expedition to the western and northern parts of Vatnajökull. Fourteen members of the expedition, led by Gunnar Guðmundsson and Carl Eiríksson, traveled over the surface of the ice cap from Jökulheimar at the margin of Tungnárjökull to Grímsfjall (Svíahnúkur eystri). Subsequently, the expedition traveled...
Authors
Richard S. Williams, Magnus Mar Magnusson
Wave- and tidally-driven flow and sediment flux across a fringing coral reef: Southern Molokai, Hawaii Wave- and tidally-driven flow and sediment flux across a fringing coral reef: Southern Molokai, Hawaii
The fringing coral reef off the south coast of Molokai, Hawaii is currently being studied as part of a US Geological Survey (USGS) multi-disciplinary project that focuses on geologic and oceanographic processes that affect coral reef systems. For this investigation, four instrument packages were deployed across the fringing coral reef during the summer of 2001 to understand the processes...
Authors
C. D. Storlazzi, A.S. Ogston, Michael H. Bothner, M.E. Field, M.K. Presto
Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate
This paper presents results of shear strength and acoustic velocity (p-wave) measurements performed on: (1) samples containing natural gas hydrate from the Mallik 2L-38 well, Mackenzie Delta, Northwest Territories; (2) reconstituted Ottawa sand samples containing methane gas hydrate formed in the laboratory; and (3) ice-bearing sands. These measurements show that hydrate increases shear...
Authors
W.J. Winters, I.A. Pecher, W.F. Waite, D.H. Mason
The Gulf of the Farallones: Sidescan-sonar imagery The Gulf of the Farallones: Sidescan-sonar imagery
No abstract available.
Authors
Edward Sweeney, William W. Danforth, Thomas F. O’Brien, William C. Schwab
Influence of near-surface stratigraphy on coastal landslides at Sleeping Bear Dunes National Lakeshore, Lake Michigan, USA Influence of near-surface stratigraphy on coastal landslides at Sleeping Bear Dunes National Lakeshore, Lake Michigan, USA
Lake-level change and landslides are primary controls on the development of coastal environments along the coast of northeastern Lake Michigan. The late Quaternary geology of Sleeping Bear Dunes National Lakeshore was examined with high-resolution seismic reflection profiles, ground-penetrating radar (GPR), and boreholes. Based on sequence-stratigraphic principles, this study recognizes...
Authors
W. A. Barnhardt, B. E. Jaffe, R. E. Kayen, G.R. Cochrane
Monitoring salt-marsh responses to open marsh water management at U.S. Fish and Wildlife coastal refuges Monitoring salt-marsh responses to open marsh water management at U.S. Fish and Wildlife coastal refuges
No abstract available.
Authors
M.J. James-Pirri, R.M. Erwin, D.J. Prosser, J. Taylor
Designation of the type species of Musaraneus Pomel, 1848 (Mammalia: Soricomorpha: Soricidae) Designation of the type species of Musaraneus Pomel, 1848 (Mammalia: Soricomorpha: Soricidae)
The genus name Musaraneus often is attributed to Brisson (1762), however, most of Brisson's names are unavailable. Pomel (1848) subsequently made the name Musaraneus available, but did not designate a type species. The 18 species that Pomel listed under Musaraneus currently are distributed among five modern genera, two of which (Cryptotis Pomel, 1848 and Diplomesodon Brandt, 1852) are...
Authors
N. Woodman
Stand development on reforested bottomlands in the Mississippi Alluvial Valley Stand development on reforested bottomlands in the Mississippi Alluvial Valley
Reforestation of bottomland hardwood sites in the southeastern United States has markedly increased in recent years due, in part, to financial incentives provided by conservation programs. Currently >250,000 ha of marginal farmland have been returned to hardwood forests. I observed establishment of trees and shrubs on 205 reforested bottomlands: 133 sites were planted primarily with oak...
Authors
D.J. Twedt
The mute swan, its status, behavior, and history in the U. K The mute swan, its status, behavior, and history in the U. K
For many years the mute swan has been considered a royal bird. It is a prominent resident throughout the United Kingdom (U.K.), often found on the inland waterways. Some people consider it to be a nonmigratory native bird because it doesn't tend to move large distances and doesn't often venture far from freshwater. A mute swan may often live out its life cycle in the same river valley in...
Authors
E.J.R. Lohnes
Extinction rate estimates for plant populations in revisitation studies: Importance of detectability Extinction rate estimates for plant populations in revisitation studies: Importance of detectability
Many researchers have obtained extinction-rate estimates for plant populations by comparing historical and current records of occurrence. A population that is no longer found is assumed to have gone extinct. Extinction can then be related to characteristics of these populations, such as habitat type, size, or species, to test ideas about what factors may affect extinction. Such studies...
Authors
M. Kery