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Revised PRISM3 Pliocene Sea Surface Temperature Estimates Model experiments that attempt to simulate climates of the past serve to identify both similarities and differences between two climate states and, when compared with simulations run by other models and with geological data, to identify model-specific biases. Uncertainties associated with both the data and the models must be considered in such an exercise. The most recent period of sustained global warmth similar to what is projected for the near future occurred about 3.3–3.0 million years ago, during the Pliocene epoch. Here, we present Pliocene sea surface temperature data, newly characterized in terms of level of confidence. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arctic Ocean, Atlantic Ocean, Climatology, Ecology, Marine Geology, All tags... Pacific Ocean, Pliocene, Southern Ocean, Stratigraphy, USGS Science Data Catalog (SDC), foraminifera, indian Ocean, ostracods, oxygen isotope analysis, paleoceanography, paleoclimate, paleoclimate indicators, sea surface temperature, sea surface temperature reconstruction, Fewer tags Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA Hydrothermally altered rocks, particularly if water saturated, can weaken stratovolcanoes, thereby increasing the potential for catastrophic sector collapses that can lead to far-traveled, destructive debris flows, which are the largest volcanic hazards for Mount Adams and Mount Baker. Evaluating the hazards associated with such alteration is difficult because much of the alteration is obscured by ice and its depth extent is unknown. Intense hydrothermal alteration significantly reduces the resistivity and magnetization of volcanic rock and therefore hydrothermally altered rocks are identified with helicopter electromagnetic and magnetic measurements at Mount Baker and Mount Adams. High resolution magnetic and electromagnetic... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CGGSC, Crustal Geophysics and Geochemistry Science Center, Fugro Airborne Surveys, Geophysics, Mt Baker, All tags... Mt. Adams, USGS Science Data Catalog (SDC), Volcanology, Washington, aeromagnetic surveying, electromagnetic surveying, geophysics, geospatial datasets, magnetic surveying, mountain, resistivity, Fewer tags Exposed Precambrian Bedrock in Part of Dickinson County, Michigan, and Marinette and Florence Counties, Wisconsin The U.S. Geological Survey conducted a program of bedrock geologic mapping in much of the central and western upper peninsula of Michigan and parts of Wisconsin from the 1940’s until the late 1990’s. Geologic studies in this region are hampered by a scarcity of bedrock exposures because of a nearly continuous blanket of unconsolidated sediments resulting from glaciation of the region during the Pleistocene ice ages. The USGS mapping, done largely at a scale of 1:24,000, routinely recorded the location and extent of exposed bedrock to provide both an indication of where direct observations were made, and as a guide for future investigations to expedite location of observable rock exposures. The locations of outcrops... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Dickinson County, Michigan, Florence County, Wisconsin, Marinette County, Wisconsin, Mineralogy, North America, All tags... USGS Science Data Catalog (SDC), United States of America, bedrock, geology, outcrops, Fewer tags Inorganic and organic concentration data collected from 38 streams in the United States, 2012-2014, with supporting data, as part of the Chemical Mixtures and Environmental Effects Pilot Study This USGS data release contains station and laboratory method information and geospatial information, as well as concentration results for inorganic and organic compounds and bioluminescent yeast estrogen screen and transgenic zebrafish embryo estrogren bioassay, analyzed at 38 sites in 25 states as part of the Chemical Mixtures and Environmental Effects Pilot Study, 2012-2014. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Environmental Health, USGS Science Data Catalog (SDC), United States, chemical mixtures, ecological exposures, All tags... estrogen bioassay, estrogen screen, laboratory, laboratory methods, landscape metrics, station information, stream channels, streams, Fewer tags Stream temperature predictions in the Delaware River Basin using pseudo-prospective learning and physical simulations Stream networks with reservoirs provide a particularly hard modeling challenge because reservoirs can decouple physical processes (e.g., water temperature dynamics in streams) from atmospheric signals. Including observed reservoir releases as inputs to models can improve water temperature predictions below reservoirs, but many reservoirs are not well-observed. This data release contains predictions from stream temperature models described in Jia et al. 2022, which describes different deep learning and process-guided deep learning model architectures that were developed to handle scenarios of missing reservoir releases. The spatial extent of this modeling effort was restricted to two spatially disjointed regions... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Hydrology, NY, New York, PA, Pennsylvania, All tags... US, USGS Science Data Catalog (SDC), United States, Water Quality, Water Resources, climate change, deep learning, environment, hybrid modeling, inlandWaters, machine learning, modeling, reservoirs, temperature, water, water resources, Fewer tags Alaska Geochemical Database Version 3.0 (AGDB3) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media The Alaska Geochemical Database Version 3.0 (AGDB3) contains new geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving speed and efficiency of use. Like the Alaska Geochemical Database Version 2.0 before it, the AGDB3 was created and designed to compile and integrate geochemical data from Alaska to facilitate geologic mapping, petrologic studies, mineral resource assessments, definition of geochemical baseline values and statistics, element concentrations and associations, environmental impact assessments, and studies in public health associated with geology. This relational database, created from databases and published... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AGDB, AMRAP, Alaska Geochemical Database, Alaska Mineral Resource Assessment Program, Alaska Range, All tags... Aleutian Range, Alexander Archipelago, Brooks Range, Chugach Mountains, Geochemistry, Heavy Mineral Program, Kuskokwim Mountains, Mineralogy, Praseodymium, Seward Peninsula, USGS Science Data Catalog (SDC), Wrangell Mountains, aluminum, analytical chemistry, antimony, arsenic, ash, barium, beryllium, bismuth, boron, bound or essential water, bromine, bulk density, cadmium, calcium, calcium carbonate, carbon, carbon dioxide, carbonate carbon, cerium, cesium, chemical analysis, chlorine, chromium, cobalt, copper, dysprosium, environmental geochemistry, erbium, europium, exploration geochemistry, f02013=Eastern Aleutian Islands, f02016=Western Aleutian Islands, fOC4101=Gulf of Alaska, fOC4102=Bering Sea, fUS02=Alaska, fUS=United States, ferric iron, ferrous iron, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientificInformation, germanium, gold, hafnium, heavy-mineral concentrate chemistry, holmium, hydrogen, indium, iodine, iridium, iron, lanthanum, lead, lithium, loss on ignition, lutetium, magnesium, manganese, mercury, mineral resources, mineralogical data, mineralogy, moisture or nonessential water, molybdenum, neodymium, nickel, niobium, nitrate, nitrogen, organic carbon, osmium, pH, palladium, phosphorus, platinum, potassium, powder density, pyritic sulfur, rhenium, rhodium, rock chemistry, rubidium, ruthenium, samarium, scandium, sediment chemistry, selenium, silicon, silver, sodium, soil chemistry, strontium, sulfate, sulfide, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, total water, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags Mean tidal range in marsh units of Plum Island Estuary and Parker River salt marsh complex, Massachusetts Note: The 2021 data release "Geospatial characterization of salt marshes for Massachusetts" is a more recent and comprehensive MA salt marsh dataset. (https://doi.org/10.5066/P97E086F) Biomass production is positively correlated with mean tidal range in salt marshes along the Atlantic coast of the United States of America. Recent studies support the idea that enhanced stability of the marshes can be attributed to increased vegetative growth due to increased tidal range. This dataset displays the spatial variation of mean tidal range (i.e. Mean Range of Tides, MN) in the Plum Island Estuary and Parker River (PIEPR) salt marsh complex based on conceptual marsh units defined by Defne and Ganju (2018). MN was based... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, Great Marsh Area of Critical Environmental Concern, LTER, Long-Term Ecological Research, Massachusetts, All tags... Merrimack River, Parker River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Plum Island Sound, Sandy Point State Reservation, United States, Water Resources, coastal ecosystems, coastal processes, environment, estuary, inlandWaters, marsh health, oceans, salt marsh, tidal range, tides (oceanic), vegetation, wetland ecosystems, wetland functions, Fewer tags Stillwater Complex Strike and Dip Database (ver. 2.0, April 2024) This shapefile includes strike and dip information for the area of the Stillwater Complex, located in southwestern Montana. This dataset was created from pre-existing digital strike and dip information and from digitizing strike and dip locations from georeferenced map images. The data includes information about the strike and dip locations; the geologic unit and rock type the measurement was taken on; information about the source map, such as map title and scale; and other miscellaneous information. Version 2.0 includes additional strike and dip measurements and updated locations for many points resulting from maps that were re-georeferenced using high resolution lidar. For access to the previous version of this... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Geomorphology, Mineral Resources, Montana, Stillwater, Stratigraphy, All tags... Structural Geology, USGS Science Data Catalog (SDC), geologic structure, geoscientificInformation, Fewer tags « 1 ... 21 22 23 24 25