Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
This Flood Insurance Study was produced through a cooperative partnership between the State of North Carolina and FEMA. The North Carolina Floodplain Mapping Program, through FEMA's Cooperating Technical State (CTS) Initiative, is conducting flood hazard analyses and producing updated, digital FIRM panels for all North Carolina communities. Additional information regarding the North Carolina Floodplain Mapping Program and the data collected during the mapping process are available at http://www.ncfloodmaps.com. The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to the earth's surface using the NC State Plane Coordinate System, North American Datum 1983, Units of Feet. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.
Contaminant discharge in habitat springs of the Barton Springs Salamander during storm rainfall events
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
Aquatic habitat of the endangered Barton Springs salamander, Eurycea sosorum, in Travis County, Texas can potentially be impacted by contaminants in surface runoff from urbanized areas. This study was conducted to 1 determine types and levels of pydrophobic contaminants in springdischarged sediment in four habitat springs of the salamander during major precipitation events and 2 define timecourse differences in contaminant levels for the four habitat springs during these events. Suspended sediment from the four habitat springs was sampled and analyzed for hydrophobic contaminants after rainstorm events had caused turbid flow at these springs. Soluble pesticides were also sampled from each spring during a single rain event in May 2000. Eight trace metals As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn were present in varying concentrations in suspended sediment samples taken at the four habitat springs. Arsenic and nickel exceeded TELs threshold effects levels on a relative basis for all recorded rainfall events in the springs. Nickel concentrations exceeded a relative PEL probable effects level at least once in all four springs during a rainfall event. Five soluble pesticides atrazine, simazine, metolachlor, diazinon, and prometon were detected in at least one sample from the four springs. Deethylatrazine a degredate of atrazine was also detected. Although these contaminants occurred within salamander habitat during the years of 2000 to 2002 in concentrations that are below lethal dosages for the salamander and its prey, additional analyses should be made on both an acute and chronic basis to ensure that contaminant exposure does not reach concentrations that can impact the salamander or its habitat. In addition, future toxicity testing involving this highly endangered amphibian should include sublethal endpoints such as effects on growth and reproduction.
Long-Life, Oil-Free Polymeric, Multi-Roller Traction Drives for Planetary Vehicle Surface Exploration Project
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
Multi-roller traction drives have several advantages relative to geared units for aerospace and commercial drive applications. Among these are zero backlash, low torque ripple, compactness, light weight, and unlike gears, the potential to operate without liquid or grease lubrication. Current traction drives are made from heat treated bearing steels and require special traction fluids which limited their use to terrestrial applications. Space applications such as planetary vehicles operate in hostile environments. Innovations in material technology for non-lubricated operation will be required in order to benefit from the inherent advantages of traction drives relative to gears. Phase I work of this proposal will provide the basis for alternative nonmetallic materials to be substituted for bearing steel. These materials must have low wear but high traction characteristics. The proposed effort under Phase I will be used as a basis for a Phase II effort, in which one or more prototype systems will be designed, built and tested for space exploration applications. Applications include robotic arms, speed and torque balanced drives for scientific instruments and zero torque reaction drives for planetary vehicles.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
This narrative report for Crescent Lake National Wildlife Refuge outlines Refuge accomplishments for March of 1938. The report begins by summarizing the weather conditions during this period. Wildlife including migratory birds, predators, and rodents is also covered. The Refuge development and maintenance section discusses physical developments. The public relations section of the report describes Refuge participation. Photographs are attached.
Published By U.S. Department of Health & Human Services
Issued over 9 years ago
Summary
Description
State officials use the OCSE-157 to report annual statistical and financial information on their Child Support Enforcement (CSE) program to the Department of Health and Human Services (HHS). This information will enable the Secretary of HHS to comply with sections 409, 452(a) and (g), 458, and 469 of the Social Security Act (the Act). The Act requires the Secretary to establish standards for an effective Child Support Enforcement program, and to make an Annual Report to the Congress on program activities. Information submitted by states will also enable HHS to compute individual state incentive, penalty, and outcome measures to be used in evaluating state performance in running a CSE program. The authority to collect this information is also set forth in regulations at 45 CFR 30
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The Canadian Ice Service (CIS) produces digital Arctic regional sea ice charts for marine navigation, climate research, and input to the Global Digital Sea Ice Data Bank (GDSIDB). The ice charts are created through the manual analysis of in situ, satellite, and aerial reconnaissance data. The ice charts have information on ice concentration, stage of development, and ice form, following World Meteorological Organization terminology. These sea ice charts begin in 2006 and cover the following regions of the Canadian Arctic: Northern Canadian waters (Western Arctic, Eastern Arctic, and Hudson Bay) and Southern Canadian waters (Great Lakes and East Coast). Each regional shapefile (.shp) (encoded in SIGRID-3 format) and associated metadata file (.xml) are combined into a tar archive file (.tar) for distribution. All data are available via FTP.
Environmental contaminants in Arctic tern eggs from Petit Manan Island, Petit Manan National Wildlife Refuge
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
Petit Manan Island is a 3.5hectare 9 acre island that lies approximately 4kilometers 2.5miles from the coastline of Petit Manan Point, Steuben, Washington County, Maine. A gull control program was initiated in 1983 by refuge personnel. Within 2 weeks of gull removal, several pairs of terns began recolonizing the island. By 1992, over 1,800 pairs of terns were nesting on Petit Manan Island, including over 60 pairs of the federally endangered roseate tern. Also nesting on the island were approximately 500 pairs of laughing gulls Larus atricilla, 10 pairs of Atlantic puffin Fratercula arctica and several hundred pairs of black guillemots Cepphus grylle. Because the island became one of the most diverse seabird nesting colonies in the Gulf of Maine, and the most important nesting island for roseate terns in Maine, a baseline study of contaminants was initiated for nesting terns. Being a relatively abundant nesting tern species on Petit Manan Island, and easily accessible for scientific collection, the Arctic tern was selected as the indicator species for this contaminant survey. The purposes of the survey were to determine the baseline levels of trace element and organochlorine contaminants in Arctic tern eggs on Petit Manan Island and to evaluate the potential contaminant threat within breeding terns of Petit Manan Island.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
One of the primary missions of the National Ocean Service (NOS) and its predecessor agencies has been to accurately survey the coast of the United States. Beginning in the late 1930's, metric aerial photographs have become the primary source material for coastal survey maps and digital cartographic feature files. Photographic surveys replaced plane table field surveys because they could be completed faster and less expensively. The metric-quality vertical aerial photographs are acquired by the National Geodetic Survey (NGS) and their contractors and are maintained by the NGS. These photographs are used for a variety of geo-positioning application including shoreline delineation, marine planning, mapping water depths, topographic mapping, mapping seabed characteristics, and locating features or obstructions to ensure the safety of marine and air navigation. NGS's area of photogrammetric responsibilities includes all coastal regions, including the Great Lakes and their connecting navigable waterways. This represents approximately 95,000 miles of shoreline. NGS maintains a library of all vertical aerial photographic surveys of the coast dating back to1945 1942. There are currently over 500,000 photographs in the library with additional photographs being acquired each year. All photographs are available to the public for purchase.
Published By Department of Veterans Affairs
Issued over 9 years ago
Summary
Description
VA FULL-TIME,PART-TIME, & INT EMPLOYEES BY OCCUPATON
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The Floodplain Mapping/Redelineation flood risk boundaries are derived from the engineering information Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). In addition to the preceding, required text, the Abstract should also describe the projection and coordinate system as well as a general statement about horizontal accuracy.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This digital data set contains the locations, water-level altitude, and water-level differences of 70 wells selected to document water-level changes between fall 2004 and spring 2005 in the Anza-Terwilliger area of Riverside County, California. The winter of 2005 was one of the wettest periods on record. Links to the U.S. Geological Survey National Water Information Systems Website (NWISWeb) have been established to interactively view recent water-level information via the internet by clicking on a specific well.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
To provide the user with a general idea of areas where final critical habitat for Razorback sucker (Xyrauchen texanus) occur based on the description provided in the Federal Register. The geographic extent includes counties in Arizona, California, Colorado, Nevada, New Mexico and Utah.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This map layer portrays the Congressional Districts of the United States for the 106th Congress. The map layer was created by extracting lines from existing National Atlas layers that were coincident with Congressional District boundaries. In areas lacking coincident geometry, lines from 1:100,000 scale Congressional District boundaries published by the U.S. Department of Commerce, Bureau of the Census, Geography Division were generalized and integrated into the data layer.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
<p>Propulsion technology is often critical for space missions.&nbsp;High-value missions could be done with very&nbsp;small spacecraft, even CubeSats, but these nanosatellites&nbsp;currently have little propulsion capability. After&nbsp;CubeSats are deployed, they usually just tumble or drift&nbsp;away from the transport spacecraft. They cannot transfer&nbsp;to higher value orbits, maintain their orbit, or even&nbsp;deorbit. Larger spacecraft would benefit from highprecision&nbsp;attitude-control systems to maintain the&nbsp;desired orbit and point in the desired direction. Existing&nbsp;attitude-control systems, like reaction wheels, are very&nbsp;complex and may have insufficient lifetimes. NASA is&nbsp;investing in Microfluidic Electrospray Propulsion (MEP)&nbsp;thrusters to provide the new propulsion capabilities to&nbsp;address both of these mission needs.</p><p>Chemical propulsion systems are limited to the combustion&nbsp;energy available in the chemical bonds of the&nbsp;fuel and the acceleration provided by a converging-diverging&nbsp;nozzle. Electric propulsion uses electric&nbsp;power to accelerate propellant to very high exhaust&nbsp;velocities&mdash;up to 10 times greater than for chemical&nbsp;propulsion. This increases the momentum transfer efficiency&nbsp;or the fuel economy. The propellant efficiency of&nbsp;thrusters, which is proportional to the exhaust velocity,&nbsp;is referred to as the &ldquo;specific impulse,&rdquo; or ISP, measured&nbsp;in seconds. The state of the art for CubeSats is cold&nbsp;gas propulsion with an ISP of 50 to 80 s. The chemical&nbsp;propulsion main engine for the space shuttles demonstrated&nbsp;an ISP of 450 s. However, the target ISP for MEP&nbsp;systems is greater than 1500 s&mdash;enough to transfer a&nbsp;1-kg 10-cm cube from low Earth orbit to interplanetary&nbsp;space with only 200 g of propellant.</p>
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
CALIPSO Lidar Level 2 5 km aerosol layer data
Published By Department of Agriculture
Issued over 9 years ago
Summary
Description
Summary reports of the volume of meat graded for quality by the USDA Agricultural Marketing Service.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
Under Phase I, the feasibility of a novel thermal stress-free ceramic composite mechanical fastener system suitable for assembly of high-temperature composite structures was successfully demonstrated. The innovative 2-dimensional (2D) fastener design facilitates joining load-bearing hot structural assemblies and can be produced at a cost much lower than other competing designs and methods. Functional SiCf/SiCm composite fasteners having two (2) fiber reinforcement orientations of 0/90-degrees (cross-ply) and 145-degrees (bias-ply) were fabricated for characterization. Testing of the respective fasteners included both axial tension and single-lap shear. The cross-ply reinforced SiCf/SiCm fasteners exhibited axial tensile and single-lap shear strengths of 38.0 and 33.1 ksi, respectively. The bias-ply fasteners exhibited axial tensile and single-lap shear strengths of 31.3 and 29.8 ksi, respectively. Using a generalized analytical method for determining the distribution of forces and stresses in the 2D mechanical fastener developed in Phase I, optimized configurations will be designed and produced in Phase II for evaluation. The metallic subcomponents used for Phase I demonstration will be produced using a high temperature-capable material (e.g., ceramic, superalloy). Aerodynamically smooth Cf/SiCm and SiCf/SiCm composite structural lap joints will be assembled using the optimized composite fastener system for characterization. Testing of the lap joint assemblies will performed to determine the flexibility and structural efficiency of the joint as a function of off-axis loading relative to the principal axis of the fasteners. Elevated temperature testing will be performed to establish the effects of temperature on the mechanical properties of the joint.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
Output and documentation from a set of multi-century experiments performed using NOAA/GFDL's climate models. Users can download files, display data file attributes, and graphically display the data. Data sets include those from CM2.X experiments associated with the Intergovernmental Panel on Climate Change Assessment Report (IPCC) and the US Climate Change Science Program (US CCSP).
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
This data set includes biophysical measurements collected in 2009 from five New England experimental forest stations: Bartlett Experimental Forest, Harvard Forest, Howland Research Forest, Hubbard Brook Experimental Forest, and the Penobscot Experimental Forest. Howland measurements were repeated in 2010 and one site in the Sierra National Forest, California, was surveyed in 2008. Biomass in respective measurement plots was calculated with allometric equations using measured diameter at breast height (DBH) for trees greater than 10 cm and species identification. Within selected subplots, the number of stems with diameters less than 10 cm were counted and classified to allow for an estimate of biomass for these stems. There are 16 data files provided that present the biophysical measurement results and the biomass estimates in ASCII comma-separated format. For a subset of sites and plots (Bartlett Experimental Forest, Harvard Forest and Howland Research Forest), more intensive inventories were done in coordination with Echidna lidar imaging (Strahler et al., 2008). In these intensive collections, the stem location, species, DBH and live/dead status were recorded for all stems with total stem height and canopy dimensions recorded for every tenth stem. In addition, for stems below 10 cm DBH, species and count were recorded in a subplot of each intensive inventory plot. See the related data set Strahler et al., 2011.Investigators from Federal and university laboratories conducted these field campaign to make estimates of forest biophysical attributes that will prove useful in comparisons with airborne lidar (LVIS) and UAVSAR remote sensing acquisitions. The North American Carbon Program (NACP) is a multi-disciplinary research program designed to obtain scientific understanding of North America's carbon sources and sinks and of the changes in carbon stocks needed to meet societal concerns, and to provide tools for decision makers. NACP began in 2002 and continues to date. The NACP data collection contains continental carbon budgets, dynamics, processes, and management of the sources and sinks of carbon dioxide, methane, and carbon monoxide in North America and in adjacent ocean regions.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
Several open pit mines in Nevada lower groundwater to mine ore below the water table. After mining, the pits partially fill with groundwater to form pit lakes. Water quality in the pit lakes may be affected by a variety of factors including the quality of inflowing groundwater, atmospheric precipitation, sulfide oxidation in surrounding rock, dissolution of metals, precipitation of metals, and evaporative concentration. Oxidation reactions on exposed pit walls may release sulfate, acid, and metals into the pit lake. In some cases, water contained in the pit lakes may be of poor quality and may contain concentrations of metals or other inorganic constituents that greatly exceed water quality standards and published wildlife effect levels. Two types of pit lakes may form. The first type has a circumneutral pH and may develop a complex food web. The second type is highly acidic and will remain relatively sterile. While this second type may be less attractive to wildlife, it is highly toxic if water is consumed. Geochemical modeling to predict water quality in some future pit lakes has predicted longterm degradation of pit lake water quality. Wildlife use and the degree of threat presented by inorganic contaminants in pit lakes are uncertain, although at least limited riparian and aquatic communities will become established in most pit lakes where pH remains circumneutral. In these circumneutral pH pit lakes, wildlife use and fish introductions over the longterm are uncertain. Wildlife exposure to contaminants through drinking water and consumption of contaminated foods in the lakes may occur. Constituents that bioaccumulate or biomagnify in the food chain, such as selenium and mercury, are of greatest concern. Currently, little is known about biological characteristics of mine pit lakes. This investigation was designed to provide information on habitat and community development, habitat quality, wildlife use, inorganic contaminants behavior and partitioning, and the potential for wildlife exposure to inorganic contaminants in mine pit lakes.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The TAO array (renamed the TAO/TRITON array on 1 January 2000) consists of approximately 70 moorings in the Tropical Pacific Ocean, telemetering oceanographic and meteorological data to shore in real-time via the Argos satellite system. The array is a major component of the El Nino/Southern Oscillation (ENSO) Observing System, the Global Climate Observing System (GCOS) and the Global Ocean Observing System (GOOS). Support is provided primarily by the United States (National Oceanic and Atmospheric Administration) and Japan (Japan Agency for Marine-earth Science and TEChnology).
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
Recent developments in digital terrain and geospatial database management technology make it possible to protect this investment for existing and future projects to a much greater extent than was possible in the past. The minimum requirement for hydraulics data includes input and output files for all hydraulic models and spatial datasets that are needed to implement the models. (Source: FEMA Guidelines and Specs, Appendix N)
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
Shock-wave/boundary-layer interactions (SWBLI) pose challenges to aeronautical engineers because they create regions of adverse pressure gradients as a result of the discontinuous change in conditions across the shock. This shock-induced pressure gradient is a common factor for both flow separation in supersonic inlets and high stagnation pressure losses on transonic wings, factors which are known to reduce performance and efficiency. These affects can be corrected with appropriate forms of flow control. Innovative Technology Applications Company (ITAC) and University of Notre Dame (UND) propose the use of electrohydrodynamic (EHD) plasma actuators to control the affects of SWBLIs for two types of problems, one involving boundary layer separation and the other transonic wave drag. We propose to use plasma actuators near the region of the SWBLI to eliminate or delay the onset of separation in supersonic inlets while using plasma-based shock control methods to reduce the stagnation pressure losses on transonic airfoils. The advantages of the dielectric barrier discharge (DBD) actuators are that they are fully electronic, contain no moving parts, surface mountable, minimally intrusive, can be turned off when not needed, and electrically re-configurable for optimal control in dynamic flow conditions.