Hydroacoustic monitoring and the international ex- change of hydroacoustic data Infrasound monitoring and the international exchange of infrasound data The International Data Centre On-site inspections. The IMS that are to acquire seismic, radionuclide, hydroacoustic, and infrasound data in ...
E-print Network
of Hydroacoustic Data; � Infrasound Monitoring and the International Exchange of Infrasound Data stations that are to acquire seismic, radionuclide, hydroacoustic and infrasound data in support used by the IMS (seismology, hydroacoustics, infrasound, radio nuclide monitoring
Accurate determination of adult salmon spawner abundance is key to the assessment of recovery actions for wild Snake River spring/summer Chinook salmon (Onchorynchus tshawytscha), a species listed as threatened under the Endangered Species Act (ESA). As p...
National Technical Information Service (NTIS)
We used split-beam hydroacoustics and trawling to monitor the kokanee Oncorhynchus nerka population in Dworshak Reservoir during 1999. Estimated abundance of kokanee has continued to increase since the high entrainment losses in the spring of 1996. Based ...
... ACOUSTIC DETECTION, *SEISMIC WAVES, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *UNDERWATER ACOUSTICS, DATA ...
DTIC Science & Technology
, radionuclide, infrasound and hydroacoustic technologies. As well as the records from the CTBTO network (which
#12;Hydroacoustic Monitoring of Fish Communities in Offshore Wind Farms Annual Report 2004 Horns Rev reference to the source. #12;Hydroacoustic monitoring of fish communities in offshore wind farms Horns Rev ...
In most applications of hydroacoustic techniques for fish detection and abundance estimation, the data collection procedure involves echo sounding in a down-looking mode from a moving vessel. This study reports on two applications of stationary hydroacous...
The authors used split-beam hydroacoustics to monitor kokanee Oncorhynchus nerka kennerlyi abundance in Dworshak Reservoir from 1995 to 1996 in order to quantify the impacts of water releases from Dworshak Dam. The kokanee population was at a record high ...
Calibration of hydroacoustic stations for nuclear explosion monitoring is important for increasing monitoring capability and confidence from newly installed stations and from existing stations. Calibration of hydroacoustic stations is herein defined as th...
... that intersected Amchitka Island in the Aleutian Islands. ... recorded on the SOFAR channel was higher ... CHASE explosion off the California coast that ...
... knowledge grid would contain information from both theoretical detection and location capability models and this type of observed historical data. ...
... This poster presents an overview of three of the technical studies that have a direct bearing on the performance of hydrophone monitoring systems ...
... Descriptors : *ACOUSTIC DETECTION, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *UNDERWATER ACOUSTICS, SYMPOSIA ...
Hydroacoustic monitoring of seismicity at the slow-spreading Mid-Atlantic Ridge Deborah K. Smith,1-term hydroacoustic monitoring of the northern Mid-Atlantic Ridge (MAR) was initiated. Six autonomous hydrophones were Underwater Hydrophone Data From the Northern Mid-Atlantic Ridge: February 1999�February 2000, Eos ...
A model for predicting the detection and localization performance of hydroacoustic monitoring networks has been developed. The model accounts for major factors affecting global-scale acoustic propagation in the ocean, such as horizontal refraction from ba...
During August 2002 we conducted a hydroacoustic survey to enumerate pelagic fish >406 mm in Lake Pend Oreille, Idaho. The purpose of this survey was to determine a collective lakewide biomass estimate of pelagic bull trout Salvelinus confluentus, rainbow trout Oncorhynchus mykiss, and lake trout S. namaycush and compare it to pelagic prey (kokanee salmon O. nerka) ...
DOE Information Bridge
... Bendway, Hydroacoustics, Scour holes, Dredged material disposal, Meander loops, Tidal, Fish, Morone chrysops, Trawl survey, Fish abundance ...
Mysis relicta can be observed on echograms as a sound scattering layer when they migrate into the water column at night to feed on zooplankton. However, quantitative ... ...
NBII National Biological Information Infrastructure
Statistics (NSS) StreamStats Global Change Hydrology Watershed Modeling Storm-Tide Monitoring Hydroacoustics Facilities Instrumentation (HIF) Hydraulics Laboratory...
Science.gov Websites
... Monitoring for the Comprehensive Nuclear-Test-Ban ... Impulse response model of the equatorial Atlantic for the ... Note the cluster of arrivals at 95-96 ...
... We describe the models used and demonstrate their use on selected sites. PACS number: 43.30.Bp, 43.30.Cq 19960624 209 1028
... The United States Air Force Technical Applications Center (AFTAC) is tasked with monitoring compliance of nuclear test ban treaties for the US. ...
In an effort to recover the declining kokanee Oncorhynchus nerka kennerlyi population in Lake Pend Oreille, a study was proposed to evaluate the benefits of a higher winter elevation, thus providing more spawning gravel for kokanee. This project was designed to collect and compile baseline information on the kokanee population and potential spawning gravel in Lake Pend Oreille that can be used to ...
Onsite testing of strobe lights was conducted to determine if they repelled kokanee Oncorhynchus nerka away from the turbine intakes at Dworshak Dam. We tested a set of nine strobe lights flashing at a rate of 360 flashes/min placed near the intake of a 90 mW turbine. A split-beam echo sounder was used to determine the effect of strobe light operation on fish density (thought to be mostly kokanee) ...
Energy Citations Database
Calibration of hydroacoustic and T-phase stations for Comprehensive Nuclear-Test-Ban Treaty (CTBT) monitoring will be an important element in establishing new operational stations and upgrading existing stations. Calibration of hydroacoustic stations is herein defined as precision location of the hydrophones and determination of the ...
Lake herring (Coregonus artedi) and rainbow smelt (Osmerus mordax) are a valuable prey resource for the recovering lake trout (Salvelinus namaycush). However, their respective biomasses may be insufficient to support the current predator demand. In August 1977, we assessed the ...
EPA Science Inventory
The methods employed during the demersal (bottom trawling) phase of the 1977 Rockfish Survey and in obtaining catch and biological data during the demersal and pelagic (hydroacoustic-midwater) phases are outlined. Geographic and bathymetric trends in the ...
Hydroacoustics-the method of using sonar to estimate fish entrainment-works at many types of hydropower sites, and offers significantly lower operating costs than other monitoring options.
The hydroacoustic nuclear explosion monitoring regime, like its counterpart in seismic monitoring, requires ground truth calibration. Model predictions of traveltimes, blockages, reflections, diffractions, and waveform envelopes need to be verified with g...
... California. In 1978, an acoustic velocity meter was installed at Freeport to monitor the flow. The acoustic velocity meter was calibrated successfully and has been used continuously since that time. Althou...
In support of monitoring for nuclear tests, a Hydroacoustic Data Acquisition System (HDAS) monitoring system is to be installed at Ascension Island. The system consists of two hydrophone arrays linked by fibre optic cable to the island. A survey to select...
We used split-beam hydroacoustics and trawling to monitor the kokanee Oncorhynchus nerka population in Dworshak Reservoir during 1999. Estimated abundance of kokanee has continued to increase since the high entrainment losses in the spring of 1996. Based on hydroacoustic surveys, we estimated 1,545,000 kokanee and ...
An International Monitoring System (IMS) network or hydrophone- and seismometer-based sensors has been established over a period of ten years by the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) to monitor the global ocean for compliance with the Treaty. Six of the IMS monitoring stations use triplets of hydrophones ...
NASA Astrophysics Data System (ADS)
The hydroacoustic monitoring by the International Monitoring System (IMS) for Comprehensive Nuclear-Test-Treaty (CTBT) verification system utilize hydrophone stations and seismic stations called T-phase stations for worldwide detection. Some signals of natural origin include those from earthquakes, submarine volcanic eruptions, or ...
The Hydroacoustic Coverage Assessment Model (HydroCAM) has been used to develop components of the hydroacoustic knowledge database required by operational monitoring systems, particularly the US National Data Center (NDC). The database, which consists of travel time, amplitude correction and travel time standard deviation grids, is ...
The results of a 1977 trawl-hydroacoustic survey of the distribution and abundance of Pacific whiting, Merluccius productus, off California, Oregon, Washington, and British Columbia are presented. A total of 1,198,932 metric tons of Pacific whiting were e...
It is demonstrated that the level of vibrations of turbines on the Sayano-Shushensk hydro power plant is enhanced by the capability of a compressible fluid to perform its own hydroacoustic oscillations (which can be unstable) in the turbine duct. Based on the previously obtained results of solving the problem of natural hydroacoustic oscillations in the ...
HYDROACOUSTIC PROPAGATION THROUGH THE ANTARCTIC CONVERGENCE ZONE: STUDY OF ERRORS IN YIELD AND LOCATION ...
During this contract, we continued testing underwater strobe lights to determine their effectiveness at repelling kokanee Oncorhynchus nerka away from Dworshak Dam. Strobe light tests were conducted on four nights from April 24-27, 2006, in front of the middle reservoir outlet (RO) 2. The density and distribution of fish, (thought to be mostly kokanee), were monitored with a ...
During this contract, we continued testing underwater strobe lights to determine their effectiveness at repelling kokanee Oncorhynchus nerka away from Dworshak Dam. We tested one set of nine strobe lights flashing at a rate of 360 flashes/min in front of turbine 3 while operating at higher discharges than previously tested. The density and distribution of fish, (thought to be mostly kokanee), were ...
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) specifies that an International Monitoring System (IMS) will be used to detect and locate disturbances that could be related to nuclear testing. In order to monitor disturbances in and near the world's oceans, the IMS will rely on a network of 11 hydroacoustic stations. This ...
... Zn). This correction is made by monitoring the abundance of 6°Ni, assuming natural isotopic abundances, and correcting ...
... of weekly checks of yellow pan trapping for flying insects. Abundance measurements with particular emphasis on crane ... ...
Important commercial fisheries occur in the marine waters of Upper Cook Inlet, Alaska as adult Pacific salmon return to spawn in their natal rivers. The most valuable harvest occurs on sockeye salmon (Oncorhynchus nerka) runs to the Kenai, Kasilof, and Su...
herring Coregonus artedi and rainbow smelt Osmerus mordax are an important resource for the recovering ABSTRACT. Lake herring (Coregonus artedi) and rainbow smelt (Osmerus mordax) are a valuable prey resource), rainbow smelt (N = 45), bloater Coregonus hoyi (N = 18), kiyi Coregonus kiyi (N = 12), and lake trout (N
During licensing or relicensing procedures, resource agencies often recommend that hydroelectric project owners monitor fish passage at the site of the power plant. By using multiple sampling techniques, an owner can made a comprehensive assessment of the fish population surrounding a site and determine how the project affects these fish. This approach was recently used at a ...
In February 1999, long-term hydroacoustic monitoring of the northern Mid-Atlantic Ridge (MAR) was initiated. Six autonomous hydrophones were moored between ~15�N and ~35�N on the flanks of the MAR. Results from the first year of data reveal that there is significant variability in along-axis event rate. Groups of neighboring segments behave similarly, ...
Snake River sockeye salmon were listed as endangered in 1991. Since then, the Shoshone-Bannock Tribes (SBT) have been involved in a multi-agency recovery effort. The purpose of this document is to report activities completed in the rearing environments of the Sawtooth Valley Lakes, central Idaho. SBT objectives for 1995 included: continuing population monitoring and spawning ...
... biocontrol program by monitoring the abundance of both purple loosestrife and the biocontrol insects." Included is information on ... ...
... Title : Workshop on Standardizing Hydroacoustic Methods of Estimating Fish Passage for Lower Columbia River Dams. Descriptive Note : Final rept. ...
... Title : Hydroacoustic Fishery Assessment Techniques: A Feasibility Study on the Mississippi River. Descriptive Note : Final rept.,. ...
... Hydroacoustic arrays for seismic detection, location and discrimination: A comparison with land-based seismic arrays and networks ...
... Accession Number : ADA212625. Title : Fundamental Studies of Hydroacoustics. Descriptive Note : Final rept. 1986-1989. ...
... Title : Detection of Fluid Velocity and Hydroacoustic Particle Velocity Using a Temperature Autostabilized Nonlinear Dielectric Element (TANDEL). ...
Page 1. AUDIO-VISUAL AND HYDROACOUSTIC OBSERVATIONS OF THE DEAD SEA CALIBRATION EXPERIMENT Yefim ...
... Accession Number : ADA526753. Title : Audio-Visual and Hydroacoustic Observations of the Dead Sea Calibration Experiment. ...
The purpose of this study is to investigate the localization of long-range hydroacoustic events, such as sub-sea earthquakes and underwater explosions, received at a single monitoring station. A matched-field technique is used to predict synthetic waveforms that would be received at a hydroacoustic station for a given source location. ...
The International Data Centre (IDC) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) in Vienna, Austria, is developing the capability to routinely determine the sensor noise levels for all Seismic, Hydroacoustic and Infrasound (SHI) stations of the International Monitoring System (IMS) sending data to the IDC. This noise data can be used ...
Parameters of earthquake sequences, for instance location and timing of foreshocks and aftershocks, are critical for understanding dynamics of mid-ocean ridge and transform faults. Whole sequences including small earthquakes in the ocean cannot be well recorded by land-based seismometers due to large epicentral distances. Recent hydroacoustic studies have demonstrated that T ...
of all kinds: for discovering hydrocarbons by their electrical signature; for monitoring the spatial- ly, Parker, Sandwell infrasound, de Groot-Hedlin, Hedlin inverse theory, Parker landscape systems, Werner modeling with application to infrasound and hy- droacoustics; application of hydroacoustics and infrasound
(Drake Passage) off the west coast of the Antarctic Peninsula. This paper discusses initial results of earthquakes associated with seafloor volcanic activity and the vast majority of tectonic activity, often networks (Dziak et al., 2004). Geologic and geophysical background The South Shetland Island (SSI)�Antarctic
We tested the response of kokanee Oncorhynchus nerka to strobe lights. Testing was conducted on wild, free-ranging fish in their natural environment (i.e., the pelagic region of two large Idaho lakes). Split-beam hydroacoustics were used to record the dis...
in the southern hemisphere, including CASY (Casey Station, Antarctica), RAR (Raratonga), RAO (Raoul Island, NZ of seismic and hydroacoustic energy that can be monitored at stations far from iceberg sources to determine seabed topography, remote sensing imagery, onshore seismograph stations and iceberg
sources of infrasounds 3.5 The case of the Great Sumatra-Andaman earthquake 3.6 Sources in the atmosphere of the International Monitoring System (global seismological, hydroacoustic, radionuclide, and 21 #12;infrasound network on observations at the surface (seismograms, barograms, tides gauges, infrasound arrays), or at high altitudes
., J. R. Cann, and the cruise participants of CD65, Mid-Atlantic Ridge volcanism from deep-towed side. Matsumotu, and M. Fowler, Hydroacoustic monitoring of seismicity at the slow-spreading Mid-Atlantic Ridge, Spatial and temporal distribution of seismicity along the northern Mid-Atlantic Ridge (15o -35o N), J
- based and satellite-based), and by elastic wave sensors (infrasound, hydroacoustics, seismology). From none Infrasound secondary secondary major none Electromagnetic secondary secondary major major sampling and infrasound detection was developed and an initial network of seismic stations was established
Calibration of hydroacoustic stations for nuclear explosion monitoring is important for increasing monitoring capability and confidence from newly installed stations and from existing stations. Calibration of hydroacoustic stations is herein defined as the near-field precision location of the hydrophones and ...
We used split-beam hydroacoustics to monitor kokanee Oncorhynchus nerka kennerlyi abundance in Dworshak Reservoir from 1995 to 1996 in order to quantify the impacts of water releases from Dworshak Dam. The kokanee population was at a record high level of 1.9 million age-1 and age-2 fish (350 fish/ha) during June 1995. Large discharges ...
One mitigation goal of the Hungry Horse Dam fisheries mitigation program, funded by the Bonneville Power Administration, is to replace lost production of 100,000 adult kokanee in Flathead Lake. The mitigation program calls for a five-year test to determine if kokanee can be reestablished in Flathead Lake. The test consists. of annual stocking of one million hatchery-raised yearling kokanee. There ...
This paper describes the results of an International Monitoring System synergy study using Sandia National Laboratory`s IVSEM (Integrated Verification System Evaluation Model). The study compares individual subsystem performance (seismic, infrasound, radionuclide, and hydroacoustic) with integrated system performance. The integrated system exhibits synergy ...
Quagga mussels (Dreissena bugensis) have been linked to oligotrophication of lakes, alteration of aquatic food webs, and fouling of infrastructure associated with water supply and power generation, causing potentially billions of dollars in direct and indirect damages. Understanding their abundance and distribution is key in slowing their advance, assessing their potential ...
PubMed
The overall mesozooplankton monitoring program is designed to detect and monitor changes in mesozooplankton and jellyfish abundance, species composition, ... ...
Seismic stations at islands and continental margins will be an essential component of the International Monitoring System (IMS) for event location and identification in support of Comprehensive Nuclear-Test-Ban Treaty (CTBT) monitoring. Particularly important will be the detection and analysis of hydroacoustic-to-seismic converted ...
OAK A271 Hydroacoustic Studies Using HydroCAM - Station-centric Integration of Models and Observations Quarterly Report No. 2 January 2003 - March 2003. BBN's work from January through March of 2003 was focused on data collection, data analysis and software development. We continued our efforts to collect ground truth hydroacoustic data from ...
The cessation of testing of any nuclear explosive devices in all environments is the goal of the Comprehensive Test Ban Treaty. In order to assure compliance with such a treaty, an international monitoring system has been proposed. This system will include seismic, infrasound, hydroacoustic and radionuclide monitors located throughout ...
The core focus of this hydroacoustic research is to develop a better understanding of hydroacoustic blockage to better predict those stations that can be used in discrimination analysis for any particular event. The research involves two approaches: (1) m...
This collaborative project was designed to test and compare methods for achieving full ocean basin propagation of hydroacoustic signals in the 5-100 Hz frequency band. Plans for a systematic calibration of the International Monitoring System (IMS) for nuclear testing were under consideration in 2000/2001. The results from this project provide information ...
This data set is the Spring 2003 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
This data set is the Spring 2002 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
This data set is the Spring 2001 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
This data set is the Fall 2008 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
This data set is the Fall 2007 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
This data set is the Fall 2000 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species ... ...
These data describe the species richness and abundance as part of MCR LTER's reef fish monitoring program to track long-term patterns in species abundance ... ...
The author has identified the following significant results. The distribution and abundance of white
NASA Technical Reports Server (NTRS)
Link to USGS home USGS Home Contact USGS Search USGS Welcome to the National SW Conference and Hydroacoustics Workshop If the government is open, the conference will go on! Tampa,...
... THE PALTUS-M HYDROACOUSTIC STATION FOR GEOLOGICAL AND GEOMORPHOLOGICAL RESEARCH-OCEANOLOGY, V8, NO1, P125-127. ...
... Of The Hydroacoustic To Seismic T-Phase Transition ... Recordings of T-phases at stations in northern ... also indicated that T-phase amplitudes depend ...
Hydroacoustics Workshop April 2 � 6, 2007 St. Louis, Missouri Second Photographic Competition Categories: 1. Disasters || 2. Gage || 3. SW Field Work || 4. Hydroacoustic || 5....
Nella Dan: ADBEX II Cruise - Hydroacoustic krill survey data ... Temperature, nutrient and salinty data were also obtained, as well as trawl results. ...
NASA Website
... path is blocked by bathymetry, the only observable arrivals may be reflections. Here we present a model for predicting long-range hydroacoustic ...
Hydroacoustic techniques, particularly acoustic Doppler current profilers (ADCP), have gained wide usage in rivers for measuring velocity, depth, and discharge. Velocity measurements with ADCPs are derived from frequency shifts in the energy returned from particles in suspension(i.e. Doppler shifts). It has long been recognized that the amount of energy returned, or ...
The method and results of many days of measurements of acoustic noise generated during installation of the oil and gas producing platform PA-B and construction of an underwater pipeline in the north-eastern shelf of Sakhalin Island are described. Acoustic measurements were carried out simultaneously with the use of five autonomous radio-hydroacoustic stations installed along ...
Within a year after the nuclear detonations over Hiroshima and Nagasaki the Baruch Plan was presented to the newly formed United Nations Atomic Energy Commission (June 14, 1946) to establish nuclear disarmament and international control over all nuclear activities. These controls would allow only the peaceful use of atomic energy. The plan was rejected through a Security Council veto primarily ...
The Lake Roosevelt Fisheries Evaluation Program is the result of a merger between two projects, the Lake Roosevelt Monitoring Program (BPA No. 8806300) and the Lake Roosevelt Data Collection Project (BPA No. 9404300). These projects were merged in 1996 to continue work historically completed under the separate projects, and is now referred to as the Lake Roosevelt Fisheries ...
The overall microzooplankton monitoring program is designed to detect and monitor changes in microzooplankton abundances and species composition in relation ... ...
The Center for Monitoring Research (CMR) in Arlington, VA served as a prototype of the International Data Center (IDC) that is specified in the Comprehensive Nuclear Test Ban Treaty (CTBT). The CMR developed the software that is now being used by the IDC that has been established in Vienna to acquire, process, and analyze data from the global networks of ...
Hydroacoustic tools were used to map depth, elevation, and substrate on DeSoto Lake in March 2006. DeSoto Lake, located on the DeSoto National Wildlife Refuge in Iowa and Nebraska, is one of the largest oxbow lakes of the Missouri River system. It is used by over 500,000 migratory birds each fall and spring and is also an important aquatic resource for anglers. Management ...
USGS Publications Warehouse
The Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) is tasked with monitoring compliance with the CTBT. The organization is installing the International Monitoring System (IMS), a global network of seismic, hydroacoustic, infrasound, and radionuclide sensor stations. The International Data Centre (IDC) receives the data from ...
We are continuing the development of the Hydroacoustic Blockage Assessment Tool (HABAT) which is designed for use by analysts to predict which hydroacoustic monitoring stations can be used in discrimination analysis for any particular event. The research involves two approaches (1) model-based assessment of blockage, and (2) ...
... LOCATION), *SEISMIC DETECTION, *ACOUSTIC SIGNALS, *NUCLEAR EXPLOSION DETECTION, *DISCRIMINATION, *EARTHQUAKES ...
... xxi development expertise will erode, and the Hydrodynamics ... In light of these developments and the ... and � Maintain and nurture technical expertise ...
On the basis of experimental data on hydrospheric pressure variations, obtained with the use of a laser hydrophone and laser gauge of hydrospheric pressure variations, while hydroacoustic radiators were running, generating hydroacoustic waves at frequencies of about 32, 245, and 421 Hz in water, it was established that there is no modulating action of wind ...
... Descriptors : *TRANSMISSION LOSS, *UNDERWATER ACOUSTICS, *SEISMIC DETECTION, INDIAN OCEAN, HYDROPHONES, UNDERWATER ...
... Descriptors : *SEISMIC DETECTION, *HYDROPHONES, *UNDERWATER ACOUSTICS, SIGNAL PROCESSING, SEISMIC DATA, ACOUSTIC ...
... FIELDS, ACOUSTIC ATTENUATION, HYDROPHONES, GAS ... MICROCRACKING, ALDEHYDE POLYMERS. ... ACOUSTICS POLYMER CHEMISTRY. ...
These data describe the abundance and size of fish species as part of SBCLTER’s kelp forest monitoring program to track long-term patterns in species ... ...
... the U.S. Geological Survey Search UMESC Publications Ichthyoplankton abundance and variance in a large river system ... Dewey, M. R., and ...
Acoustic techniques were used to study the behavior of fish around the cooling water intake structure of the Southern California Edison Generating Station at Redondo Beach, California. The transducer was positioned on the bottom near the intake and alongside a television camera atop the intake structure. Considerable information was obtained on the diel behavior of fish and their response to the ...
Accurate determination of adult salmon spawner abundance is key to the assessment of recovery actions for wild Snake River spring/summer Chinook salmon (Onchorynchus tshawytscha), a species listed as 'threatened' under the Endangered Species Act (ESA). As part of the Bonneville Power Administration Fish and Wildlife Program, the Nez Perce Tribe operates an ...
Diel habitat shifts consisting of vertical or horizontal movements are common in both marine and freshwater fishes. Hypothesis proposed to explain this behavior include maximizing food consumption, minimizing risk of predation, and maximizing bioenergetic efficiency. The bioenergetic hypothesis is often considered under conditions of thermal heterogeneity within the environment. The general ...
OAK B272 Quarterly technical report summarizing BBN's efforts to improve DOE's hydroacoustic modeling and analysis capability for nuclear explosion monitoring. BBN's work during the third quarter of 2003 was focused on preparations for and participation in the 2003 Seismic Research Review Meeting, unit testing and bug fixes to ...
OAK A271 Hydroacoustic Studies Using HydroCAM - Station-centric Integration of Models and Observations Quarterly Report No. 3 April 2003 - June 2003. BBN's work from April through June of 2003 was focused on the testing and release of HydroCAM 4.0, development of HydroCAM 4.1 software, continued data collection and analysis, and initial preparations for the 2003 ...
We report initial results from a 14-month hydroacoustic experiment in the Indian Ocean conducted by CNRS/University of Brest and NOAA/Oregon State University. The objective was to monitor the low-level seismic activity associated with the three contrasting spreading ridges and deforming zones in the Indian Ocean. Three autonomous hydrophones, moored in ...
This research was part of the South Channel Ocean Productivity Experiment (SCOPEX), a multidisciplinary study to investigate the biological and physical processes associated with the very high annual springtime abundance of right whales (Eubalaena glacialis) in the Great South Channel off New England. Right whales appear to gather there in the spring because of the increased ...
... Ammodytes hexapterus ) abundance with pigeon guillemot ( Cepphus columba ) diets Michael A. Litzow, John F. Piatt, Alisa A. ... Ammodytes hexapterus ) abundance...
The purpose of this study is to determine the need and level of effort required to add existing atmospheric databases and infrasound propagation models to the DOE`s Hydroacoustic Coverage Assessment Model (HydroCAM) [1,2]. The rationale for the study is that the performance of the infrasound monitoring network will be an important factor for both the ...
Calibration of hydroacoustic stations for nuclear explosion monitoring is important for increasing monitoring capability and confidence from newly installed stations and from existing stations. Past work at Ascension Island has shown that ship-towed airguns can be effectively used for local calibrations such as sensor location, ...
Statistical procedures were established for using species abundance distributions for monitoring pollution impacts in aquatic biological communities. The report synthesizes the statistical theory necessary for conducting inferences with community abundanc...
This data set is the Spring 2004 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined ... ...
This data set is the Spring 2003 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined ... ...
The 3-year study intended to develop a program for monitoring the abundance of ringed seals in Alaska through aerial surveys. The report presents the results of aerial surveys of ringed seals on the shorefast ice of the eastern Chukchi Sea and Beaufort Se...
This data set is the Fall 2007 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined by ... ...
This data set is the Fall 2005 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined by ... ...
This data set is the Fall 2003 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined by ... ...
This data set is the Spring 2002 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined ... ...
This data set is the Fall 2002 estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined by ... ...
This data set is the first Fall estimate of crab densities at the GCE-LTER marsh sites used for population monitoring. Crab abundance was determined by ... ...
The elevation of Lake Pend Oreille was kept 1.2 m higher during the winter of 1997-1998 in an attempt to recover the impacted kokanee fishery. This was the second winter of a scheduled three-year test. Hydroacoustic surveys and trawling were conducted in the fall of 1998 to assess the kokanee population. We estimated the abundance of wild and hatchery fry ...
Washington Council of Governments 1987). Monitoring efforts are an effective means of quantifying the distribution and abundance of the exotic species, Hydrilla...
Monitoring efforts are an effective means of quantifying the distribution and abundance of the exotic species, Hydrilla verticillata (hydrilla) and other ...
Abundant stoneflies, caddisflies, and mayflies in their aquatic life stage, for instance, indicate that the water is clean and ...
... detect, classify, locate, track and monitor marine mammals in their ... estimating absolute density or abundance of marine mammal populations using ...
Abundant stoneflies, caddisflies, and mayflies in their aquatic life stage, for instance, indicate that ... 43. Zebra Mussel Monitoring in Washington State ...
Abundant stoneflies, caddisflies, and mayflies in their aquatic life stage, for instance, indicate that ... 24. Envirodat Water Quality Monitoring Database ...
Abundant stoneflies, caddisflies, and mayflies in their aquatic life stage, for instance, indicate that ... 7. Zebra Mussel Monitoring in Washington State ...
... ACOUSTICS, MONITORS, GENERATORS, UNDERWATER ACOUSTICS, DEEP WATER, ENTRAINMENT, ANOXIA, TIME, DISTRIBUTION, DAMS ...
... Results of extensive monitoring of the HDO path concentration with a Gas Filter Correlation Spectrometer (GFCS) show an abundance ratio ...
This project will monitor the abundance and distribution of Chinese mitten crab, quantify habitat associations and impacts to banks and levees, and the ... ...
Monthly records of bird species and abundance to monitor seasonal and spatial patterns of birds on natural areas of escarpment. To relate patterns of ... ...
... species loss over time. Additional index words: Ecologically invasive, ... absence of long-term monitoring data on the distribution and abundance of ... ...
... continue monitoring juvenile salmonid condition and outmigration in Clear Creek, Shasta County in order to provide information ... rotary screw trap and counted as they leave Clear Creek. Fish abundance, ...
