Filters: Tags: bulk density (X)
92 results (227ms)|
Filters
Date Range
Extensions Types Contacts
Categories Tag Types
|
Data in the IGS' GeoLab database for w#84845: results for a bulk density analysis on a sample from 0.52 to 0.52 feet deep; and results for 4 grain size analyses on samples from 0.52 to 6.66 feet deep.
Categories: Publication;
Types: Citation;
Tags: Bulk density,
Catchment,
EE 444.2 Groundwater; EE 903.3 Information Retrieval and Use,
Environmental Engineering Abstracts,
Forecasting,
Data in the IGS' GeoLab database for w#84836: results for a bulk density analysis on a sample from 0.72 to 0.72 feet deep; and results for 5 grain size analyses on samples from 0.72 to 6.23 feet deep.
Data in the IGS' GeoLab database for w#84840: results for a bulk density analysis on a sample from 0.49 to 0.49 feet deep; and results for 4 grain size analyses on samples from 0.49 to 6.56 feet deep.
Reducing non-point source phosphorus (P) pollution is often necessary to improve water quality in agricultural streams. Soil total P (TP) concentrations and compaction are soil characteristics that can influence P losses to streams. The objective of this study was to compare these two soil characteristics among riparian forest buffers, grass filters, pastures with cattle fenced out of the stream, intensive rotational, rotational and continuously grazed pastures and row-cropped fields in three physiographic regions of Iowa. Soil TP and compaction for the seven riparian land-uses were determined in stream bank and surface riparian soils. Total P concentrations in stream bed material along the seven riparian land-uses...
Categories: Publication;
Types: Citation;
Tags: Bulk density,
Conservation practices,
Data Visualization & Tools,
Grazing practices,
Landscapes,
Variability in sediment properties with depth and the thickness of individual sedimentary layers are critical determinants of seabed acoustic response. The New England Mud Patch (NEMP), located south of Cape Cod, is an unusual feature on the U.S. Continental Shelf in that it is composed of fine-grained sediment layers containing a relatively-homogeneous mix of sand, silt, and clay-sized particles bounded by more typical sandy shelf sediments. The unique characteristics and nature of this deposit is due to a derivation of sediments that have been transported to, and deposited in, a basal bowl-shaped depression since the last glacial maximum. Ninety-two piston, vibra-, and gravity cores with a maximum length of 8.2...
These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...
Mangrove restoration has a strong potential to enhance the services provided by coastal wetlands on a number of Department of the Interior (DOI) managed lands throughout the southeastern United States of America. Services include storm protection, water quality improvement, and biological carbon sequestration. Forest structural attributes including basal area, tree height, and stem density by species are used to calculate above ground biomass and above ground productivity. Percent cover is used to asses the forest canopy health. The data collected for the soils are: bulk density, percent total Nitrogen, percent total Carbon, and selected samples percent total Phosporus. The forest structure plots were placed in...
Categories: Data;
Types: Citation;
Tags: Avicennia germinans,
Carbon,
Collier County,
Conocarpus erectus,
Ecology,
These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...
Data in the IGS' GeoLab database for w#84830: results for a bulk density analysis on a sample from 0.3 to 0.3 feet deep; and results for 8 grain size analyses on samples from 0.3 to 7.25 feet deep.
Data in the IGS' GeoLab database for w#84841: results for a bulk density analysis on a sample from 0.62 to 0.62 feet deep; and results for 5 grain size analyses on samples from 0.62 to 6.66 feet deep.
This file contains soil data for 3 depths (0-0.5 meters, 0.5-1.5 meters, and greater than 1.5 meters) for percent sand, clay, and rockiness for the entire globe at a half degree grid resolution. A single bulk density value and mineral depth are also provided for each gridcell. Bulk density values came from the the International Geosphere Biosphere Programme (IGBP). Mineral depth, clay, sand, and rockiness values came from the International Satellite Land Surface Climatology Project (ISLSCP).
Winter climate change has the potential to have a large impact on coastal wetlands in the southeastern U.S. Warmer winter temperatures and reductions in the intensity of freeze events would likely lead to mangrove forest range expansion and salt marsh displacement in parts of the U.S. Gulf of Mexico and Atlantic coast. The objective of this research was to better understand some of the ecological implications of mangrove forest migration and salt marsh displacement. The potential ecological effects of mangrove migration are diverse ranging from important biotic impacts (e.g., coastal fisheries, land bird migration; colonial nesting wading birds) to ecosystem stability (e.g., response to sea level rise and drought;...
Grain size distribution and bulk density are reported for sediment samples from two flooded agricultural tracts, Little Holland Tract and Liberty Island, in the Sacramento-San Joaquin Delta, California. Samples were repeatedly collected at 8 sites using a Ponar grab or push core samplers during 19 visits to the study area from 2015 to 2019. The long-term time series data collection stations (sites LWA, HVB, HWC, and LVB) were sampled on almost every field survey, and the remaining sites were sampled 6 or times or fewer, some only once. All samples were analyzed for grain size distribution and some were analyzed for bulk density. These data provide insight into how particle size distributions varied spatially and...
Categories: Data;
Tags: CMGP,
Coastal and Marine Geology Program,
Liberty Island,
Little Holland Tract,
Oceans,
These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...
This tabular data set represents the STATSGO Soil Layer Attributes compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The source data is found in the LAYER table from the "STATSGO soil characteristics for the conterminous United States" produced by the United States Geological Survey (Wolock, 1997). The variables included are water-table depth, soil erodibility (k-fact), soil erodibility for the uppermost soil horizon (k-factup), permeability, average water capacity, bulk density, percent organic material, rainfall and runoff factor ("R factor"...
Types: Citation;
Tags: Catchment,
Conterminous United States,
Inlandwaters,
K factor,
K factor upper horizon,
This file contains soil data for 3 depths (0-0.5 meters, 0.5-1.5 meters, and greater than 1.5 meters) for percent sand, clay, and rockiness for the entire globe at a half degree grid resolution. A single bulk density value and mineral depth are also provided for each gridcell. Bulk density values came from the the International Geosphere Biosphere Programme (IGBP). Mineral depth, clay, sand, and rockiness values came from the International Satellite Land Surface Climatology Project (ISLSCP).
This file contains soil data for 3 depths (0-0.5 meters, 0.5-1.5 meters, and greater than 1.5 meters) for percent sand, clay, and rockiness for the entire globe at a half degree grid resolution. A single bulk density value and mineral depth are also provided for each gridcell. Bulk density values came from the the International Geosphere Biosphere Programme (IGBP). Mineral depth, clay, sand, and rockiness values came from the International Satellite Land Surface Climatology Project (ISLSCP).
A cvs file containing field datasets used to develop regression models to predict sediment and nutrient retention services for stream within the Difficult Run watershed. Field measurements of floodplain deposition and bank erosion were provided in previously published datasets from Hupp et al. (2013) and Gellis et al. (2017). At each field site 3-5 nearby cross-sections from the Toolbox where used to represent the floodplain and streambank sampling locations at the field sites. Metrics derived from the Toolbox are provided in this data table.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Difficult Run,
Fairfax County,
Flood plains,
Fluvial morphology,
Virginia,
Data in the IGS' GeoLab database for w#84839: results for a bulk density analysis on a sample from 0.33 to 0.33 feet deep; and results for 4 grain size analyses on samples from 0.33 to 6.27 feet deep.
|
|
