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Shelf-sea ecosystems

Description: An analysis of the food chain dynamics of the Oregon, Alaskan, and New York shelves is made with respect to differences in physical forcing of these ecosystems. The world's shelves are 10% of the area of the ocean, yield 99% of the world's fish catch, and may be a major sink in the global CO/sub 2/ budget.
Date: January 1, 1980
Creator: Walsh, J J
Partner: UNT Libraries Government Documents Department
open access

Hydrographic Observations Off Savannah and Brunswick, Georgia, March, May and September 1977 and January 1978

Description: Seasonal onshore-offshore sections were run in March, May and September 1977 and January 1978 off Savannah and Brunswick, Georgia. In each instance upwelling was observed at the shelf break with significant nutrient fluxes into the surface and/or shelf waters. There are indications that eddies may have been responsible for some of these observations.
Date: January 1, 1978
Creator: Singer, J. J.; Atkinson, L. P.; Chandler, W. S. & Bishop, S. S.
Partner: UNT Libraries Government Documents Department
open access

Measurement of polyethylene pipe parameters during an ocean deployment. Final report

Description: Data were acquired on the behavior of the polyethylene upwelling pipe for the GRI/DOE Marine Biomass Biological Test Farm during several phases of pipe assembly and ocean towing and deployment. The pipe is nominally 28 in O.D., 1400 feet long with wall thicknesses of 0.9 and 1.75 inches. The entire effort was conducted over a period of six weeks and was implemented on a strictly non-interference basis with the main Biomass Program. Three types of data were acquired during shore and ocean based … more
Date: November 15, 1978
Creator: Hoppmann, R. F. & Ritchie, P. L.
Partner: UNT Libraries Government Documents Department
open access

Continental Shelf Processes Affecting the Oceanography of the South Atlantic Bight. Progress Report, June 1, 1979-May 31, 1980

Description: Progress is reported on research conducted from June, 1979 to May, 1980 on various oceanographic aspects of the South Atlantic Bight. Research topics included: (1) A flashing model of Onslow Bay, North Carolina based on intrusion volumes; (2) A description of a bottom intrusion in Onslow Bay, North Carolina; (3) Detailed observations of a Gulf Stream spin-off eddy on the Georgia continental shelf; (4) Pelagic tar of Georgia and Florida; (5) A surface diaton bloom in response to eddy-forced upwe… more
Date: February 29, 1980
Creator: Atkinson, L. P.
Partner: UNT Libraries Government Documents Department
open access

Influence of faults on groundwater flow and transport at YuccaMountain, Nevada

Description: Numerical simulations of groundwater flow at Yucca Mountain, Nevada are used to investigate how faults influence groundwater flow pathways and regional-scale macrodispersion. The 3-D model has a unique grid block discretization that facilitates the accurate representation of the complex geologic structure present in faulted formations. Each hydrogeologic layer is discretized into a single layer of irregular and dipping grid blocks, and faults are discretized such that they are laterally continu… more
Date: October 7, 1999
Creator: Cohen, Andrew J.B. & Sitar, Nicholas
Partner: UNT Libraries Government Documents Department
open access

Geothermal Modeling of the Raft River Geothermal Field

Description: This interim report presents the results to date of chemical modeling of the Raft River KGRA. Earlier work indicated a northwest-southeast anomaly in the contours. Modeling techniques applied to more complete data allowed further definition of the anomaly. Models described in this report show the source of various minerals in the geothermal water. There appears to be a regional heat source that gives rise to uniform conductive heat flow in the region, but convective flow is concentrated near th… more
Date: November 1, 1979
Creator: Overton, H. L.; Chaney, R. E.; McAtee, D. L. & Graham, D. L.
Partner: UNT Libraries Government Documents Department
open access

Anthropogenically-Induced Climate Change: Final Report

Description: Paper number 1 addresses the fact that the procedure used in the Earth Radiation Budget Experiment for identifying the presence of clouds over snow/ice surfaces is known to have shortcomings, and this is corroborated through use of surface insolation measurements at the South Pole as an independent means of identifying clouds. These surface insolation measurements are then used to validate the more detailed cloud identification scheme used in the follow-up Clouds and the Earth's Radiant Energy … more
Date: December 5, 2008
Creator: Cess, Robert D.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Using Caged Clams to Monitor Contaminated Groundwater Exposure in the Near-Shore Environment of the Hanford Site 300 Area

Description: The Asiatic clam (Corbicula fluminea) has been identified as an indicator species for locating and monitoring contaminated groundwater in the Columbia River. Pacific Northwest National Laboratory conducted a field study to explore the use of caged Asiatic clams to monitor contaminated groundwater upwelling in the 300 Area near-shore environment and assess seasonal differences in uranium uptake in relation to seasonal flow regimes of the Columbia River. Additional objectives included examining t… more
Date: January 31, 2008
Creator: Larson, Kyle B.; Poston, Ted M. & Tiller, Brett L.
Partner: UNT Libraries Government Documents Department
open access

Biological Processes in the Water Column of the South Atlantic Bight: Zooplankton Responses

Description: The goal of the Fall Removal Experiment 1987 was to determine the processes affecting the dependent and fate of low salinity coastal water and of biological material therein during fall when winds are mainly south-to westward. Five zooplankton taxa, Acartia tonsa, (A. tonsa) Paracalanus species (sp), Temora turbinata (T. turbinata), Oncaea sp, and Sagitta enflata were examined. Data on the distribution of all five taxa were presented, and distribution over time was also studied. The abundance o… more
Date: February 7, 1990
Partner: UNT Libraries Government Documents Department
open access

Secondary production in waters influenced by upwelling off the coast of Somalia

Description: During the southwest monsoon of 1979, plankton samples were collected between the equator and 12{degrees}N. Surface samples collected while the research vessel was surveying this area have been analyzed for the abundance of copepod nauplii, primarily the young of the copepod Calanoides carinatus. These samples revealed a sharp rise in the abundance of nauplii in regions where sea-surface temperatures were less than 10{degrees}C. The development state of the gonads of female C. carinatus also sh… more
Date: January 1, 1991
Creator: Smith, S. L.
Partner: UNT Libraries Government Documents Department
open access

Biological consequences of environmental changes related to coastal upwelling: a simulation study

Description: Two simulation models of marine ecosystem dynamics are formulated and applied to field data. The first is a time-dependent model of phytoplankton growth in nutrient-enriched batch cultures where spatial gradients of dependent variables and the effects of higher tropic level processes are not included. Rates of photosynthesis, nutrient uptake, chlorophyll synthesis and cell division for a single phytoplankton functional group are simulated as functions of photosynthetically active solar radiatio… more
Date: May 1, 1979
Creator: Howe, S.O.
Partner: UNT Libraries Government Documents Department
open access

Distribution of marine birds on the mid- and north-Atlantic U. S. outer continental shelf. Technical progress report, September 1978-August 1979

Description: The scope of the project was not changed since the last annual report, but the study area was extended south to Cape Hatteras. The objectives were to determine spatial and temporal distributions of marine birds in mid- and north-Atlantic U.S. continental shelf waters; to identify marine bird food habits and distribution of prey items; and (3) to develop a marine bird data retrieval bank. Data from 1978-79 indicated that Georges Bank and its adjacent waters support an abundant and diverse bird p… more
Date: October 1, 1979
Creator: Powers, K.D.; Pittman, G.L. & Burrell, G.C.
Partner: UNT Libraries Government Documents Department
open access

Bomb radiocarbon sections along the Hawaii-Tahiti shuttle track. Annual progress report

Description: The objective of the research is to use the temporal and spatial distribution of the transient, bomb-produced /sup 14/C in the equatorial Pacific Ocean to determine mixing rates in the upper 1000 m of the ocean. To accomplish this goal approximately 400 /sup 14/C samples were collected during two legs of the NORPAX shuttle. There is extensive relative depletion in /sup 14/C of the equatorial surface waters. This feature of the surface water /sup 14/C distribution, coupled with the depth distrib… more
Date: February 27, 1980
Creator: Stuiver, M
Partner: UNT Libraries Government Documents Department
open access

Steady-state and transient modeling of tracer and nutrient distributions in the global ocean. Progress report, August 1, 1993--July 31, 1994

Description: We have completed the studies using the inorganic carbon cycle in the zonally averaged ocean circulation model to calculate anthropogenic uptake of CO, and bomb radiocarbon. While our results are in broad agreement with previous studies, we have learned that horizontal mixing processes due to gyre circulation are important for transient tracer experiments over a few decades. These findings are in press. Using the inorganic carbon cycle model we have started to look at the distributions of {delt… more
Date: April 30, 1994
Creator: Stocker, T. F. & Broecker, W. S.
Partner: UNT Libraries Government Documents Department
open access

Surface Energy Balance System (SEBS) Handbook

Description: A Surface Energy Balance System (SEBS) has been installed collocated with each deployed ECOR system at the Southern Great Plains (SGP), North Slope of Alaska (NSA), Tropical Western Pacific (TWP), ARM Mobile Facility 1 (AMF1), and ARM Mobile Facility 2 (AMF2). The surface energy balance system consists of upwelling and downwelling solar and infrared radiometers within one net radiometer, a wetness sensor, and soil measurements. The SEBS measurements allow the comparison of ECOR sensible and lat… more
Date: February 14, 2011
Creator: Cook, DR
Partner: UNT Libraries Government Documents Department
open access

Solar and Infrared Radiation Station (SIRS) Handbook

Description: The Solar Infrared Radiation Station (SIRS) provides continuous measurements of broadband shortwave (solar) and longwave (atmospheric or infrared) irradiances for downwelling and upwelling components. The following six irradiance measurements are collected from a network of stations to help determine the total radiative flux exchange within the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Climate Research Facility: • Direct normal shortwave (solar beam) • Diffuse horizont… more
Date: July 1, 2005
Creator: Stoffel, T
Partner: UNT Libraries Government Documents Department
open access

Secondary production in waters influenced by upwelling off the coast of Somalia

Description: During the southwest monsoon of 1979, plankton samples were collected between the equator and 12{degrees}N. Surface samples collected while the research vessel was surveying this area have been analyzed for the abundance of copepod nauplii, primarily the young of the copepod Calanoides carinatus. These samples revealed a sharp rise in the abundance of nauplii in regions where sea-surface temperatures were less than 10{degrees}C. The development state of the gonads of female C. carinatus also sh… more
Date: December 31, 1991
Creator: Smith, S. L.
Partner: UNT Libraries Government Documents Department
open access

Summary of Temperature Data Collected to Improve Emergence Timing Estimates for Chum and Fall Chinook Salmon in the Lower Columbia River, 1998-2004 Progress Report.

Description: From 1999 through 2004, Pacific Northwest National Laboratory collected temperature data from within chum and fall Chinook salmon spawning gravels and the overlying river at 21 locations in the Ives Island area approximately 5 km downstream from Bonneville Dam. Sample locations included areas where riverbed temperatures were elevated, potentially influencing alevin development and emergence timing. The study objectives were to (1) collect riverbed and river temperature data each year from the o… more
Date: October 1, 2005
Creator: Arntzen, E.; Geist, D. & Hanrahan, T.
Partner: UNT Libraries Government Documents Department
open access

The Design and Analysis of Salmonid Tagging Studies in the Columbia Basin : Volume XVII : Effects of Ocean Covariates and Release Timing on First Ocean-Year Survival of Fall Chinook Salmon from Oregon and Washington Coastal Hatcheries.

Description: Effects of oceanographic conditions, as well as effects of release-timing and release-size, on first ocean-year survival of subyearling fall chinook salmon were investigated by analyzing CWT release and recovery data from Oregon and Washington coastal hatcheries. Age-class strength was estimated using a multinomial probability likelihood which estimated first-year survival as a proportional hazards regression against ocean and release covariates. Weight-at-release and release-month were found t… more
Date: May 1, 2001
Creator: Burgess, Caitlin & Skalski, John R.
Partner: UNT Libraries Government Documents Department
open access

A Year of Radiation Measurements at the North Slope of Alaska Second Quarter 2009 ARM and Climate Change Prediction Program Metric Report

Description: In 2009, the Atmospheric Radiation Measurement (ARM) Program and the Climate Change Prediction Program (CCPP) have been asked to produce joint science metrics. For CCPP, the second quarter metrics are reported in Evaluation of Simulated Precipitation in CCSM3: Annual Cycle Performance Metrics at Watershed Scales. For ARM, the metrics will produce and make available new continuous time series of radiative fluxes based on one year of observations from Barrow, Alaska, during the International Pola… more
Date: April 15, 2009
Creator: McFarlane, S. A.; Shi, Y. & Long, C. N.
Partner: UNT Libraries Government Documents Department
open access

Assessment of Geothermal Resource Potential at a High-Priority Area on the Utah Testing and Training Range–South (UTTR–S)

Description: Field investigations conducted during 2011 support and expand the conclusion of the original Preliminary Report that discovery of a viable geothermal system is possible in the northwestern part of the Utah Testing and Training Range-South (UTTR-S), referred to henceforth as Focus Area 1. The investigations defined the southward extent of the Wendover graben into and near Focus Area 1, enhanced the understanding of subsurface conditions, and focused further geothermal exploration efforts towards… more
Date: April 1, 2012
Creator: Richard P. Smith, PhD., PG; Robert P. Breckenridge, PhD. & Thomas R. Wood, PhD.
Partner: UNT Libraries Government Documents Department
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