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These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16785

Distribution and abundance of California giant salamander (Dicamptodon ensatus) and signal crayfish (Pacifastacus leniusculus) in the Upper Redwood Creek Watershed, Marin County, California

A survey was conducted in 1997-1998 to identify the distribution of non-native signal crayfish (Pacifastacus leniusculus) and larval California giant salamanders (Dicamptodon ensatus) within the upper Redwood Creek watershed (Marin County, California). The crayfish is widely distributed along the mainstem Redwood Creek. It was found in lower Fern Creek but not in any first order tributaries or abo
Authors
Darren Fong, Judd A. Howell

Coastal vulnerability assessment of Point Reyes National Seashore (PORE) to sea-level rise

A coastal vulnerability index (CVI) was used to map the relative vulnerability of the coast to future sea-level rise within Point Reyes National Seashore in Northern California. The CVI ranks the following in terms of their physical contribution to sea-level rise-related coastal change: geomorphology, regional coastal slope, rate of relative sea-level rise, historical shoreline change rates, mean
Authors
Elizabeth A. Pendleton, E. Robert Thieler, S. Jeffress Williams

Relative coastal change-potential assessment of Kenai Fjords National Park

A change-potential index (CPI) was used to map the relative coastal change-potential of the shoreline to future sea-level changes within Kenai Fjords National Park (KEFJ) in south-central Alaska. The CPI ranks the following parameters in terms of their physical contribution to coastal change: geomorphology, regional coastal slope, rate of relative sea-level change, historical shoreline change rate
Authors
Elizabeth A. Pendleton, E. Robert Thieler, S. Jeffress Williams

Wildlife and habitat damage assessment from Hurricane Charley: recommendations for recovery of the J. N. 'Ding' Darling National Wildlife Refuge Complex

On 13 August 2004, the first of four hurricanes to strike Florida in 50% and sometimes 90% of their vegetation severely damaged (dead, broken tree stems, and tipped trees). Shell Mound Trail of JNDDNWR sustained catastrophic damage to its old growth mangrove forests. Direct storm mortality and injury to manatees in the area was probably slight. Because seagrass beads and manatee habitat extend bey
Authors
J.M. Meyers, C.A. Langtimm, T. J. Smith, K. Pednault-Willett

Water Resources Data, Pennsylvania, Water Year 2005, Volume 2. Susquehanna and Potomac River Basins

Water resources data for the 2005 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 2 contains (1) discharge records for 89 continuous-record streamflow-gaging stations, 13 partial-record stations, 23 special study and miscellaneous
Authors
R.R. Durlin, W.P. Schaffstall, M.R. Beaver

Water Resources Data, Pennsylvania, Water Year 2005, Volume 1. Delaware River Basin

Water resources data for the 2005 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 1 contains (1) discharge records for 75 continuous-record streamflow-gaging stations, 5 partial-record stations, 41 special-study and miscellaneous s
Authors
R.R. Durlin, W.P. Schaffstall, M.R. Beaver

Time of travel and dispersion in the Merrimack River in Massachusetts from the state line to the Atlantic Ocean

To obtain copies of this report, please contact: Director, Division of Watershed Management, Massachusetts Department of Environmental Protection, 8 New Bond St.. Worcester, MA 01608, (508) 792–7650
Authors
Gene W. Parker

Mineral resource of the month: tellurium

Global demand for tellurium has grown significantly in recent years owing to increased use in solar cells in the United States and Europe, thermoelectronics (especially in China) and steelmaking worldwide. Estimated global production, however, has remained relatively unchanged over the same period, while accumulated inventories have been exhausted, leading to a supply shortfall.
Authors
Micheal W. George

Surficial sediment character of the Louisiana offshore continental shelf region: A GIS compilation

The Louisiana coastal zone, comprising the Mississippi River delta plain stretching nearly 400 km from Sabine Pass at the Texas border east to the Chandeleur Islands at the Mississippi border, represents one of North America’s most important coastal ecosystems in terms of natural resources, human infrastructure, and cultural heritage. At the same time, this region has the highest rates of coastal
Authors
S. Jeffress Williams, Matthew A. Arsenault, Brian J. Buczkowski, Jane A. Reid, James Flocks, Mark A. Kulp, Shea Penland, Chris J. Jenkins

Quantity, composition, and source of sediment collected in sediment traps along the fringing coral reef off Molokai, Hawaii

Sediment traps were used to evaluate the frequency, cause, and relative intensity of sediment mobility/resuspension along the fringing coral reef off southern Molokai (February 2000–May 2002). Two storms with high rainfall, floods, and exceptionally high waves resulted in sediment collection rates > 1000 times higher than during non-storm periods, primarily because of sediment resuspension by wave
Authors
Michael H. Bothner, R. L. Reynolds, M.A. Casso, C. D. Storlazzi, M.E. Field

Ball clay

In 2005, four companies including H.C. Spinks Clay, Kentucky-Tennessee Clay, Old Hickory Clay and Unimin mined ball clay in four states. Based on a preliminary survey of the ball clay industry, production reached 1.32 Mt valued at $53.3 million. Tennessee was the leading ball clay producer state with 61% of domestic production, followed by Texas, Mississippi and Kentucky.
Authors
R.L. Virta

On the interpretation of energy and energy fluxes of nonlinear internal waves: An example from Massachusetts Bay

A self-consistent formalism to estimate baroclinic energy densities and fluxes resulting from the propagation of internal waves of arbitrary amplitude is derived using the concept of available potential energy. The method can be applied to numerical, laboratory or field data. The total energy flux is shown to be the sum of the linear energy flux ??? u??? p??? dz (primes denote baroclinic quantitie
Authors
A. Scotti, R. Beardsley, B. Butman