Filters: Tags: permeability (X)
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This database contains a comprehensive inventory of geologic (coral, coral reef, limestone, and sediment) cores and samples collected, analyzed, published, and/or archived by, or in collaboration with, the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC). The SPCMSC Geologic Core and Sample Database includes geologic cores and samples collected beginning in the 1970s to present day, from study sites across the world. This database can be accessed through the CoreViewer 3.0 ArcOnline web mapping application, linked below. A copy of the data can also be downloaded from the web mapping application and the metadata is accessible through a link in the header of the application, as...
Types: Application,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alabama,
Atlantic Ocean,
Bahamas,
Belize,
Brazil,
This data release contains monthly 270-meter gridded Basin Characterization Model (BCMv8) climate inputs and hydrologic outputs for Eel River (EEL). Gridded climate inputs include: precipitation (ppt), minimum temperature (tmn), maximum temperature (tmx), and potential evapotranspiration (pet). Gridded hydrologic variables include: actual evapotranspiration (aet), climatic water deficit (cwd), snowpack (pck), recharge (rch), runoff (run), and soil storage (str). The units for temperature variables are degrees Celsius, and all other variables are in millimeters. Monthly historical variables from water years 1896 to 2019 are summarized into water year files and long-term average summaries for water years 1981-2010....
As demands on groundwater continue to increase, decision-makers need all available information to ensure the sustainability of this important natural resource. Since the 1940's, commercial, academic, and government hydrologists have used aquifer tests to estimate the hydrogeologic properties of an aquifer near test wells. Results from these tests are recorded in various files, databases, reports, and scientific publications. The Lower Mississippi-Gulf (LMG)-Hydrogeologic Aquifer Test dataset aggregates aquifer test results from Alabama, Arkansas, Louisiana, Mississippi and Tennessee into a single dataset that is publicly available in a machine readable format. The dataset includes the following information: Location...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alabama,
Aquifer,
Aquifer test,
Arkansas,
Conductivity,
This map service is an information surface representing the dominant class within the soil map unit polygon for soil drainage class. Each component (and therefore soil map unit polygon) falls into one of the following classes according to NRCS: Very Poorly Drained, Poorly Drained, Somewhat Poorly Drained, Moderately Well Drained, Well Drained, Somewhat Excessively Drained and Excessively Drained. The class belonging to the component that makes up the highest percentage of the map unit is reported by the map service. Another service exists for drainage class which reports the wettest class in the soil map unit. The concept is similar but for some purposes knowing the wettest component may be the most useful piece...
Categories: Data;
Types: ArcGIS REST Map Service,
Map Service;
Tags: SSURGO,
drainage,
infiltration,
permeability,
porosity,
Note: this data release is currently being revised and is temporarily unavailable. This data release accompanies the USGS Techniques and Methods report titled: "The Basin Characterization Model - A Regional Water Balance Software Package", and includes all necessary Basin Characterization Model version 8 (BCMv8) inputs and outputs for water years 1896 to 2022. The BCMv8 was refined from the previous BCMv65 version to improve the accuracy of the water-balance components, particularly the recharge estimate. The new version includes seven new features: (1) monthly vegetation-specific actual evapotranspiration (AET) for 65 vegetation types, (2) spatially distributed calibration coefficients for snow accumulation and...
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related...
Since the 1940's, commercial, academic and government hydrologists have used aquifer tests to estimate the hydrogeologic properties of an aquifer near test wells. Results from these tests are recorded in various files, databases, reports, and scientific publications. The U.S. Geological Survey (USGS), Lower Mississippi-Gulf Water Science Center (LMG) is aggregating all hydrogeologic aquifer test results from Alabama, Arkansas, Louisiana, Mississippi, and Tennessee into a single dataset that is publicly available in a machine-readable format. The hydrogeologic values presented in the Mar2022 edition of the LMG-Hydrogeologic Test Dataset were estimated by Douglas Carlson, PhD, with the Louisiana Geological Survey...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Aquifer,
Aquifer Test,
Conductivity,
Groundwater,
Hydrogeology,
This data release contains monthly 270-meter gridded Basin Characterization Model (BCMv8) climate inputs and hydrologic outputs for Salinas (SAL). Gridded climate inputs include: precipitation (ppt), minimum temperature (tmn), maximum temperature (tmx), and potential evapotranspiration (pet). Gridded hydrologic variables include: actual evapotranspiration (aet), climatic water deficit (cwd), snowpack (pck), recharge (rch), runoff (run), and soil storage (str). The units for temperature variables are degrees Celsius, and all other variables are in millimeters. Monthly historical variables from water years 1896 to 2019 are summarized into water year files and long-term average summaries for water years 1981-2010....
Permeability, Wall to Wall Circuitscape, Anthropogenic Resistance, All Directions. Draft dataset, final version coming soon.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: permeability,
resilience
Conclusions: Emigration rates are closely tied to edge structure. Low contrast edges promote edge permeability Thresholds/Learnings: Synopsis: The behavior of two butterfly species, one habitat specialist and one habitat generalist, were tracked at four prairie edges to determine the extent to which edge structure affects emigration. The specialist species responded strongly to all edges, and was particularly affected by edge density. The generalist species responded strongly only to high contrast edges. Emigration rates are closely tied to edge structure. Therefore, promoting low contrast edges in conservation planning may positively influence edge permeability and species richness in highly fragmented landscapes.
Categories: Publication;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Iowa,
Land use configuration,
Landscape fragmentation,
Lepidoptera,
butterflies,
We have defined resilience as a function of both a site’s diversity of topoclimates and the site’s ability to support species movement, or terrestrial landscape permeability. Here, we posit that topoclimates provide species localized refugia from the direct effects of a changing climate, whereas landscape permeability reflects the ability of the landscape mosaic to facilitate terrestrial species movement to and between topoclimates as they shift in response to their respective climatic envelopes.90 m topoclimate data, scaled from 0.2 – 1, were multiplied with terrestrial landscape permeability data, scaled from 0 – 1, to generate a resilience value for every 90 m cell across the project area. A full description...
Categories: Data,
Publication;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Citation,
Downloadable,
Map Service;
Tags: Ecologial Flows,
Landscape Resilience,
Pacific Northwest,
Terrestrial Landscape Permeability,
biota,
This data atlas was created as part of the Great Northern Landscape Conservation Cooperative (GNLCC) Ecological Connectivity Project.
Categories: Data,
Web Site;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: EARTH SCIENCE > LAND SURFACE > LANDSCAPE,
Federal resource managers,
GNLCC,
GNLCC,
Great Northern LCC,
Boreholes were drilled in 2017 and 2018 in Redwell Basin, a headwater catchment underlain by mineralized and hydrothermally altered sedimentary rock in the Elk Mountains near the town of Crested Butte, Colorado. Site locations and well construction are documented under the main page of this data release. Hydraulic data were acquired during drilling and on core samples to estimate the hydraulic properties of selected geologic materials. While advancing the drill stem, long-interval packer tests were conducted in MW1 and MW2 boreholes to measure in-situ formation permeability. The open borehole interval targeted for each hydraulic test was exposed by raising the drill stem about 10 m above the bottom of the hole....
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Colorado,
Crested Butte,
Cretaceous,
Elk Mountains,
GGGSC,
Geofluids (2010) 10, 193–205AbstractThe variation of permeability with depth can be probed indirectly by various means, including hydrologic models that use geothermal data as constraints and the progress of metamorphic reactions driven by fluid flow. Geothermal and metamorphic data combine to indicate that mean permeability (k) of tectonically active continental crust decreases with depth (z) according to log k ≈ −14–3.2 log z, where k is in m2 and z in km. Other independently derived, crustal-scale k–z relations are generally similar to this power-law curve. Yet there is also substantial evidence for local-to-regional-scale, transient, permeability-generation events that entail permeabilities much higher than...
This dataset presents descriptions of sediments collected from a boring drilled to bedrock near Nantucket Sound in East Falmouth, Cape Cod, Massachusetts. There are four types of descriptions—units, features, subsamples, and grain-size distributions: 1) Units correspond to “lithostratigraphic units” described by Hull and others (2019). Units are vertically continuous zones of generally similar sediment type. They range from 1 to 100 feet thick. The top and bottom of each unit is given in feet relative to depth below land surface. 2) Features are described as “lithostratigraphic features” by Hull and others (2019). Features are discrete zones of very similar sediment 0.1 to 5.0 feet thick. A single unit can encompass...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: East Falmouth,
Quaternary,
earth history,
groundwater,
hydrology,
This report provides detailed (1:63,360-scale) mapping of the Tanana A-1 and A-2 quadrangles (500 square miles; equivalent to eight 7.5-minute quadrangles). The area is part of the Manley Hot Springs-Tofty mining districts and adjacent to the Rampart mining district to the south of the Tanana B-1 Quadrangle. This report includes detailed bedrock, structural, and stratigraphic data. The Tanana A-1 and A-2 Quadrangles and surrounding area comprise several isolated mountainous ridges in the western Yukon-Tanana Upland of interior Alaska.
This publication provides mercury injection capillary pressure (MICP) data for 36 outcrop samples collected from the Kaguyak, Naknek, and West Foreland formations in the Iniskin Peninsula region of Cook Inlet. The publication files provide: sample names, coordinates, and the formation from which samples were collected; per-sample pore aperture size distribution charts; formation pore volume graphs and data; pore system properties of each formation from which samples were analyzed; and correspondence from PetroTech Associates describing the methods used in MICP analyses of the samples, and a brief summary of the data
Triggering of seismicity by pore-pressure perturbations: Permeability-related signatures of the phenomenon, credited to Shapiro, SA, published in 2003. Published in Pure and applied …, volume 160, on pages 1051 - 1066, in 2003.
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Pure and applied …,
aftershocks,
diffusivity,
permeability,
seismicity,
This report describes an effort of a team of 60 scientists led by The Nature Conservancy (TNC) to identify the places where nature’s own natural resilience is the highest. Thanks to the land’s diverse topography, bedrock, and soil, these climate-resilient sites are more likely to sustain native plants, animals, and natural processes into the future, becoming natural strongholds for diversity. To map their locations, The Nature Conservancy-led team used over 70 new and comprehensive datasets to find places that are buffered from the effects of climate change because the site offers a wide range of micro-climates within a highly connected area. In 2015, the results were published in a leading conservation science...
Categories: Data,
Publication;
Types: Citation;
Tags: LCC Network Science Catalog,
North Atlantic Landscape Conservation Cooperative Data.gov,
Report,
climate change,
completed,
A three-dimensional finite-difference model, MODFLOW-2005 (version 1.12.00), was developed to better understand how Seepage Meter efficiency changes when installed in sediments with wide range of conductivities. The hypothesis is that coarser sediments will allow a greater portion of upward-flow to flow around the meter instead of through it. The hypothetical model simulates upward flow through unconsolidated sediments in the Seepage Meter Calibration Tank operating at the Denver Federal Center in Lakewood, Colorado. Groundwater Vistas (version 7) was used for initial development of the hypothetical model and postprocessing. Executables and input files were then ported into this archive with public domain executables....
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