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385 Titles Match Your Query
Showing 1 through 50 of 385
NITEDC: Concentration and oxygen and nitrogen isotopic ratios of surface snow nitrate collected during the logistic traverse between Dumont d'Urville and Concordia station in December 2007 [1011_4_IPEV_FR]
This database presents the concentration and oxygen and nitrogen isotopic ratios of surface snow collected during the logistic traverse between Dumont d'Urville and Concordia station (Antarctica) ...
NITEDC: Nitrate snow concentration and isotopic composition along the logistic traverse between Dumont d'Urville and Concordia station in January 2004 [1011_0_IPEV_FR]
This dataset presents the concentration and isotopic composition of surface snow nitrate collected during the logistical traverse between Concordia station and Dumont d'Urville between 2004-01-31 ...
NITEDC: Surface snow nitrate concentration and oxygen and nitrogen isotopic ratio measurements from 2008-02-01 to 2009-01-26 at Concordia station (Antarctica) [1011_6_IPEV_FR]
This dataset presents the concentration and oxygen and nitrogen isotopic ratio measurements of nitrate contained in the the first millimeter of Concordia (Antarctica) surface snow. Snow was scrapped ...
NITEDC: Winter snow pits for nitrate concentration and oxygen and nitrogen isotopic ratio measurements collected during the winterover 2008/2009/2010. [1011_5_IPEV_FR]
This dataset presents the concentration and oxygen and nitrogen isotopic ratio profile of snow nitrate collected during the winterover 2008 at the Concordia station (Antarctica). Depth resolution ...
NITEDC: atmospheric concentration and oxygen and nitrogen isotopic ratios of nitrate aerosols collected at Concordia station (Antarctica) by the mean of a High volume aerosol collector from 2007-01/09 to 2012-01-22 [1011_3_IPEV_FR]
This dataset presents the concentration and oxygen and nitrogen isotopic ratios of nitrate aerosols collected the Concordia station (Antarctica) from 2007-01-09 to 2008-01-22. Aerosols were collected ...
Upper Great Lakes Sediment Trap Data (1977-1993) [GLERL0004]
The main data are over 1000 sediment trap measurements of mass and chemical composition, predominantly in Lake Michigan, but with some coverage of Lakes Huron and Superior. Interpretative manuscripts ...
LBA-ECO CD-08 Carbon Isotopes in Belowground Carbon Pools, Amazonas and Para, Brazil [CD08_ISOTOPES_BELOWGROUND_1025_1]
This data set contains carbon isotope signatures from soil organic matter collected from the following sites: the forests of the ZF-2 INPA reserve approximately 80 km north of the city of Manaus, ...
LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001 [CD08_LEAF_ISOTOPES_MANAUS_1245_1]
This data set provides measurements for carbon (C), nitrogen (N), leaf area index (LAI), and carbon isotope ratio data (13C and 14C) of leaves sampled at the Manaus ZF2 Jacaranda transect area, Amazonas, ...
LBA-ECO LC-07 Lake Sediment Nutrient Data, Lago Calado, Brazil: 1982-1984 [LC07_LAKE_NUTRIENT_SEDIMENTS_1050_1]
This data set reports lake sediment texture and porosity, carbon (C), nitrogen (N), and phosphorus (P) content of surficial sediments, 210Pb-derived nutrient accumulation rates in sediments, and burial ...
LBA-ECO ND-01 Streamwater and Watershed Characteristics, Rondonia, Brazil: 1998-1999 [ND01_STREAM_CHEMISTRY_1119_1]
This data set provides the results of (1) synoptic streamwater sampling and analyses from numerous sites across Rondonia and (2) corresponding watershed characteristics derived from remote sensing ...
LBA-ECO ND-07 Carbon and Nitrogen in Cerrado Plants and Soils, Brasilia: 1999-2000 [ND07_15N_LEAVES_SOIL_1121_1]
This data set provides (1) delta 15N ratios and nitrogen concentrations for foliar samples and (2) delta 13C and delta 15N ratios as well as carbon and nitrogen concentrations for soil samples collected ...
LBA-ECO ND-30 Nutrient Analysis and Gas Fluxes, Forest Chronosequences, Para, Brazil [ND30_LITTER_PARA_1129_1]
This data set provides fine litterfall mass and nutrient concentrations from samples collected at chronosequences established at Sao Francisco do Para and Capitao Poco, Para, Brazil. Nitrogen (N) ...
VEMAP 2: Annual Ecosystem Model Responses to U.S. Climate Change, 1994-2100 [vemap2-annual_rslts_766_1]
Phase 2 of the VEMAP Project developed historical (1895-1993) gridded data sets of climate (temperature, precipitation, solar radiation, humidity, and wind speed) and projected (1994-2100) gridded ...
VEMAP 2: Monthly Ecosystem Model Responses to U.S. Climate Change, 1994-2100 [vemap2_monthly_rslts_767_1]
Phase 2 developed historical (1895-1993) gridded data sets of climate (temperature, precipitation, solar radiation, humidity, and wind speed) and projected (1994-2100) gridded annual and monthly climate ...
(U-Th)/He ages from the Kukri Hills of southern Victoria Land [KUKRI_He]
The data set consists of (U-Th)/He ages collected from three vertical profiles from the the Kukri Hills (north side of the Ferrar Glacier) of Southern Victoria Land. The data set provides ...
Boron in Antarctic granulite-facies rocks: under what conditions is boron retained in the middle crust? [NSF-ANT02-28842]
This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports a project to investigate the role and fate of Boron in high-grade metamorphic rocks of ...
Carbon and Oxygen Isotope Variation in Bivalves from Cretaceous and Paleocene of Seymour Island, Antarctica [KTSeymour]
Data include carbon and oxygen isotopic data from bivalves collected from the late Cretaceous and Paleogene of Seymour Island. These include bulk sample analyses averaging multiple years ...
Collaborative Research: Controls over the Spatial Distribution and Activity of Microbial Communities in Antarctic Soils [NSF-ANT09-44556]
Advances in molecular techniques have expanded our understanding of soil microbial communities, and raised important questions about regional and global patterns in microbial diversity. The proposed ...
Collaborative Research: EAGER: Evaluating the Larsen Basin's Suitability for Testing the Cretaceous Glaciation Hypothesis [NSF-ANT12-41460]
Intellectual Merit: Recent geochemical, sequence stratigraphic, and integrated investigations of marine strata from several continental margins and ocean basins suggest that ephemeral ice sheets may ...
Collaborative Research: East Antarctic outlet glacier contributions to the Ross Sea from chronology of detrital grains [NSF-ANT10-43619]
Intellectual Merit: The PIs proposed a provenance study of glacial deposits in the Ross Embayment that will provide a broad scale geochronologic survey of detrital minerals in till to help characterize ...
Development of Quantitative Weathering Indicators in Proximal Alluvial Sediments to Assess Glacial Activity in the Rock Record [NSF-ANT08-42639]
The proposed research seeks to test the hypothesis that chemical and physical weathering in proximal alluvial systems will show systematic and measurable variations between glacial and nonglacial ...
Exploring A 2 Million + Year Ice Climate Archive-Allan Hills Blue Ice Area (2MBIA) [NSF-ANT08-38849]
This award supports a project to generate an absolute timescale for the Allan Hills Blue Ice Area (BIA), and then to reconstruct details of past climate changes and greenhouse gas concentrations for ...
Exploring the Significance of Na-Alkaline Magmatism in Subduction Systems, a Case Study From the Ross Orogen, Antarctica [NSF-ANT10-43152]
Magmas generated during subduction of oceanic lithosphere beneath active continental margins typically have a calc-alkaline chemistry. However, igneous rocks with signatures usually associated with ...
Fate of Drilling Fluids during the South McMurdo Sound Project (SMS) of the Antarctic Geological Drilling Program (ANDRILL) [NSF-ANT10-43740]
The PI proposes to utilize computer models used by hydrogeologists to establish the fate and transport of contamination and determine the extent of drilling fluid contamination in the ANDRILL SMS ...
Geochemistry and Petrologic Evolution of Felsic Volcanoes in Western Marie Byrd Land, Antarctica [NSF-ANT05-36526]
This project uses geochemical studies to determine the origin of volcanic rocks from Marie Byrd Land (MBL), Antarctica. Surprisingly, adjacent volcanoes in the MBL have dramatically different compositions, ...
Integrated Evaluation of Mantle Xenoliths from the Fosdick Mountains, Antarctica [NSF-ANT12-46320]
The PI proposes an investigation of mantle xenoliths entrained within a suite of ~1.4 Ma mafic volcanic centers in the Fosdick Mountains, Antarctica. These recently entrained mantle xenoliths offer ...
Lake Vida Uranium/Thorium Dates [LAKE_VIDA_U-TH]
These are uranium-thorium dates of lacustrine carbonates that help to determine the age of ancient lake deposits at Lake Vida and, when compared to radiocarbon ages, yield information ...
Multi-nuclide approach to systematically evaluate the scatter in surface exposure ages in Antarctica and to develop consistent alpine glacier chronologies [NSF-ANT10-43724]
The PIs propose to investigate the impact of earth surface processes on the application of cosmogenic exposure dating in Antarctica by combining multi-nuclide techniques, detailed field experiments, ...
RUI: The Transition from Subduction to Extensional Magmatism in the Dry Valleys of Antarctica [NSF-ANT06-36269]
This project is a field and laboratory based investigation of the Vanda dike swarm in the Dry Valleys of Antarctica. These dikes crosscut Cambro-Ordovician granitoid plutons produced during the Ross ...
Stratigraphic, structural and geochronological data for the Beardmore Group, central Transantarctic Mountains [SMU_GEOL_BEARDMORE]
Geologic field data were collected in the central Transantarctic Mountains in order to study the stratigraphic history, structural geometry, and tectonic history of siliciclastic units ...
Submarine and On-Land Volcanism in the West Antarctic Rift System: A Petrologic and Geochemical Study to Assess Melting Processes and Eruption History [NSF-ANT13-21588]
This project is a geochemical study of volcanic rocks from the West Antarctic Rift system. Its goal is to understand the link between mantle composition and the diverse, regional geodynamic processes, ...
Zircon Hf Isotopes and the Continental Evolution of Dronning Maud Land, East Antarctica [NSF-ANT11-42156]
Geochemical studies of single mineral grains in rocks can be probed to reconstruct the history of our planet. The mineral zircon (ZrSiO4) is of unique importance in that respect because of its reliability ...
Cambro-Ordovician orogenic magmatism in Northern Victoria Land [ghezzo_cambro_ordovician_magmatism]
The Transantarctic Mountains expose the uplifted roots of the Ross- Delamerian orogenic system, that was active on the East Antarctic- Australia craton margin during Cambrian-Ordovician time. Granitoid ...
Climate: Long-Range Investigation, Mapping, and Prediction (CLIMAP) 18,000 Years Before Present (18k bp) Sediment Data Files [FE00126_First]
The CLIMAP (Climate: Long-range Investigation, Mapping, and Prediction) Project was funded by the National Science Foundation as part of the International Decade of Ocean Exploration (IDOE) Program. ...
Cosmogenic 36Cl in Antarctic meteorites [Tage]
We have completed metal separation for about 190 meteorites and dissolved 160 metal samples for 36Cl (half-life = 0.3 Myr) measurements. All Cl fractions were isolated from other elements ...
Crystalline rocks of the Antarctic Peninsula [dlb_APgeothermochron]
This dataset consists of: (1) a suite of crystalline rocks (primarily granitoids & quartzites, with subordinate gneisses, schists, volcanic rocks, and mafic intrusive rocks) collected from the Antarctic ...
Electrical resistivity surveys in Prospect Gulch, San Juan County, Colorado [USGS_OFR_2006_1171_PG_SJCC_1.0 Online]
Prospect Gulch is a major source of naturally occurring and mining related metals to Cement Creek, a tributary of the upper Animas River in southwestern Colorado. Efforts to improve water quality ...
Geochemical and geochronological data from Fosdick Mountains, Marie Byrd Land [ANT_0734505_MBL_FosdickMtns]
The data set includes geochemical and geochronological results of selected rock samples from the Ford Ranges, Marie Byrd Land. Samples analyzed are predominantly plutonic rocks within the Fosdick ...
Geologic data on glacial materials from the Wilkes margin, Antarctica [Goodge_0337858]
Petrologic, geochemical and geochronological data on glaciomarine sediments from the Wilkes Land margin of Antarctica. Materials studied include dredge clasts collected on cruise NBP01-01 (obtained ...
Glacial geology of Northern and Central Victoria Land and Marie Byrd Land [NL_ANTARCTIC_GLACIAL_GEOLOGY]
Separate regions within the Transantarctic Mountains, the uplifted flank of the West Antarctic rift system, appear to have distinct Neogene histories of glaciation and valley downcutting. Incision ...
Hf isotopic compositions of the Napier Complex, Antarctica [Napier_Cmplx_Hf_isotopes_1]
The geochemical community is now assessing the evidence for the origin of the earliest crust and depletion of the Archean mantle through a variety of methods, including documentation of ...
Interregional correlations for the Ross Orogen in the Ross Sea/Ross Ice Shelf sector of the Transantarctic Mountains: implications for the tectonic evolution of the palaeo-Pacific Antarctic margin of Gondwana (INTERTAM) [ftalarico_intertam]
Rocks of the Ross Orogen of the Transantarctic Mountains (TAM) are generally interpreted to have evolved during a Neoproterozoic-early Paleozoic cycle of deposition and thermotectonic phases, spanning ...
Long-Term Ecological Research (LTER)/HBR001: Hubbard Brook Precipitation [LTER_HBR001]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF) LTER/HBR001: Precipitation data has been collected with a network of 22 standard and 5 recording rain gauges ...
Long-Term Ecological Research (LTER)/HBR002: Hubbard Brook Streamflow [LTER_HBR002]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF) LTER/HBR002: Daily streamflow data have been collected at the gauged watersheds at the Hubbard Brook Experimental ...
Long-Term Ecological Research (LTER)/HBR003: Hubbard Brook Temperature [LTER_HBR003]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF) LTER/HBR003: Daily maximum, minimum, and mean temperatures from up to five locations at the Hubbard Brook Experimental ...
Long-Term Ecological Research (LTER)/HBR004: Hubbard Brook Soil Temperature, Snow, and Frost [LTER_HBR004]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR004: Soil temperature data have been collected approximately weekly at one location in the Hubbard Brook ...
Long-Term Ecological Research (LTER)/HBR005: Hubbard Brook Solar Radiation, Wind, and Humidity [LTER_HBR005]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR005: Solar radiation, wind speed and direction, and relative humidity have been recorded at the automatic ...
Long-Term Ecological Research (LTER)/HBR006: Soil Solution Chemistry in an Undisturbed Northern Hardwood Forest [LTER_HBR006]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR006: Soil solutions are collected in zero tension lysimeters at the three elevations near watershed ...
Long-Term Ecological Research (LTER)/HBR007: Longitudinal Stream Chemistry in an Undisturbed Northern Hardwood Forest Watershed [LTER_HBR007]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR007: Monthly stream samples are collected from watershed 6 at the Hubbard Brook Experimental Forest ...
Long-Term Ecological Research (LTER)/HBR008: Forest Inventory of Hubbard Brook Reference Watershed 6 [LTER_HBR008]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR008: This data set consists of an inventory of live stems (in 1965) 2 cm DBH on two of 10 m x 10 m plots ...
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