Filters: Tags: {"scheme":"None"} (X) > partyWithName: Jonathan M Friedman (X) > partyWithName: Fort Collins Science Center (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) Downloadable (1) OGC WMS Service (1) Shapefile (1) Contacts Craig A Stricker U.S. Geological Survey - ScienceBase Ecosystems Southwest Region Cristiana I Falvo More... Categories Data (2) Tag Types Place (13) Theme (12) Tags (with Scheme=None) little missouri river (2) theodore roosevelt national park (2) aerial photography (1) arizona (1) central us (1) channel adjustment (1) ephemeral stream channels (1) More... View Results as: JSON ATOM CSV

Mean of the Top Ten Percent of NDVI Values in the Yuma Proving Ground during Monsoon Season, 1986-2011 This study uses growth in vegetation during the monsoon season measured from LANDSAT imagery as a proxy for measured rainfall. NDVI values from 26 years of pre- and post-monsoon season Landsat imagery were derived across Yuma Proving Ground (YPG) in southwestern Arizona, USA. The LANDSAT imagery (1986-2011) was downloaded from USGS’s GlobeVis website (http://glovis.usgs.gov/). Change in NDVI was calculated within a set of 2,843 Riparian Area Polygons (RAPs) up to 1 km in length defined in ESRI ArcMap 10.2. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Landsat TM, NDVI, Normalized Difference Vegetation Index, Sonoran Desert, All tags... Southwestern United States, USGS Science Data Catalog (SDC), Yuma Proving Ground, biota, climatologyMeteorologyAtmosphere, ephemeral stream channels, monsoon season, Fewer tags Stable carbon isotope and wood component concentration data for riparian cottonwood tree rings, Little Missouri River, North Dakota This dataset includes stable carbon isotope values, lignin, cellulose, and hemicellulose concentrations (expressed as percent of ash-free dry mass) for riparian cottonwood (Populus deltoides) tree rings growing on the Little Missouri River floodplain, Theodore Roosevelt National Park, North Dakota. Drought stress induces stomatal closure and the carbon isotope ratio of annual tree rings tends to be negatively correlated with water availability, especially in dry environments. However, lignin and hemicellulose can obscure annual trends in carbon isotope compositions as these wood components can differ in δ13C relative to pure cellulose. We measured δ13C of whole wood in annual tree rings from seven trees with oldest... Tags: Little Missouri River, River flow reconstruction, Theodore Roosevelt National Park, USGS Science Data Catalog (SDC), biota, All tags... droughts, tree ring analysis, Fewer tags Shapefiles and Historical Aerial Photographs, Little Missouri River, 1939-2003 The data archive contains the aerial photographs and channel delineations used in our analysis. The images have been geo-referenced to the 1995 digital orthophoto quarter quadrangles as described by Miller and Friedman (2009). The separate images for each year can be viewed as a composite along with that year’s channel delineation using a geographic information system (GIS). The 2003 IKONOS satellite imagery is proprietary and, therefore, cannot be served here. The channel delineations for all photo years (including 2003) and the delineation of the outer flood-plain boundary are stored as shapefiles. These shapefiles can be manipulated using GIS applications to reproduce the spatial analyses reported in Miller and... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Central US, Little Missouri River, McKenzie County, ND, North Dakota, All tags... Theodore Roosevelt National Park, USGS Science Data Catalog (SDC), United States, aerial photography, channel adjustment, erosion, flood, flood-plain formation, geoscientific information, inland waters, plains cottonwood, Fewer tags