2,966 Works

Geochemistry and mineralogy of Eocene-Oligocene sediments of IODP Hole 302-M0002A, supplement to: März, Christian; Vogt, Christoph; Schnetger, Bernhard; Brumsack, Hans-Jürgen (2011): Variable Eocene-Miocene sedimentation processes and bottom water redox conditions in the Central Arctic Ocean (IODP Expeditrion 302). Earth and Planetary Science Letters, 310(3-4), 526-537

Christian März, Christoph Vogt, Bernhard Schnetger & Hans-Jürgen Brumsack
In 2004, Integrated Ocean Drilling Program Expedition 302 (Arctic Coring Expedition, ACEX) to the Lomonosov Ridge drilled the first Central Arctic Ocean sediment record reaching the uppermost Cretaceous (~430 m composite depth). While the Neogene part of the record is characterized by grayish-yellowish siliciclastic material, the Paleogene part is dominated by biosiliceous black shale-type sediments. The lithological transition between Paleogene and Neogene deposits was initially interpreted as a single sedimentological unconformity (hiatus) of ~26 Ma...

Major, trace and rare earth element concentrations of sediments from ODP Leg 207 sites, supplement to: Hetzel, Almut; Brumsack, Hans-Jürgen; Schnetger, Bernhard; Böttcher, Michael E (2006): Inorganic geochemical characterization of lithologic units recovered during ODP Leg 207 (Demerara Rise). In: Mosher, DC; Erbacher, J; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 207, 1-37

Almut Hetzel, Hans-Jürgen Brumsack, Bernhard Schnetger & Michael E Böttcher
The Cretaceous and Paleogene sediments recovered during Ocean Drilling Program Leg 207 can be divided into three broad modes of deposition: synrift clastics (lithologic Unit V), organic matter-rich, laminated black shales (Unit IV), and open-marine chalk and calcareous claystones (Units III-I). The aim of this study is to provide a quantitative geochemical characterization of sediments representing these five lithologic units. For this work we used the residues (squeeze cakes) obtained from pore water sampling. Samples...

Substrate rocks of Fe-Mn crusts on the IOAN and Dalmorgeologiya Guyots, supplement to: Shkol'nik, E L; Zhegallo, E A; Ponomareva, I N; Melnikov, M E; Eganov, E A; Khulapova, T M; Sedysheva, T E; Basov, I K (2004): Results of the study of substratum of cobalt-manganese crusts based on drill holes from the IOAN and Dalmorgeologiya Guyots, Magellan Seamounts, Pacific Ocean. Tikhookeanskaya Geologiya (Pacific Geology), 23(1), 76-96

E L Shkol'nik, E A Zhegallo, I N Ponomareva, M E Melnikov, E A Eganov, T M Khulapova, T E Sedysheva & I K Basov
Substratum of cobalt-manganese crusts penetrated by numerous deep-sea drill holes on the IOAN and Dalmorgeologiya Guyots of Magellan Seamounts in the Pacific Ocean has been studied. Rocks have been characterized, and ferromanganese manifestations developed in the substratum in different forms have been studied in detail. They are considered to be products of deposition of water fluids arising in the volcanic pedestal and unloading on the guyot's periphery when penetrating into top parts of rocks to...

Composition of bottom sediments and ferruginous bottom manifestations from the Baikal Lake, supplement to: Baturin, Gleb N; Peresypkin, Valery I; Zhegallo, E A (2011): Modes of iron-manganese mineralization on the bottom of lake Baikal. Translated from Okeanologiya, 2011, 51(3), 494-504, Oceanology, 51(3), 465-475

Gleb N Baturin, Valery I Peresypkin & E A Zhegallo
The investigation of the Baikal Lake bottom carried out during summer 2008 by means of the Mir deep-sea manned submersibles resulted in sampling of a series of sediments, ferruginous crusts, and peculiar mineralized tubes several centimeters high and up to 2-6 cm in diameter. According to scanning electron investigation they consist mainly of enclosing sediment particles and biogenic silica cemented by iron and minor manganese hydroxides. Chemical composition of the tubes is similar to ones...

University of Manitoba Herbarium (WIN) - Vascular Plant Collection from University of Manitoba

Bruce Ford
Founded in 1907, the Herbarium of the Department of Biological Sciences (WIN) houses the most extensive and broadly representative collection of plants in Manitoba, approximately 75,000 vascular plants. There is also a reference seed collection. Many of the specimens represent vouchers for various floristic, environmental, and ecological studies carried out by present and former members of the Department and the broader scientific community. The collections have played an important role in the development of such...

BOREAS TE-12 Leaf Optical Data for SSA Species

M.A. MESARCH, E.A. WALTER-SHEA & C.J. HAYS
The BOREAS TE-12 team collected several data sets in support of its efforts to characterize and interpret information on the reflectance, transmittance, and gas exchange of boreal vegetation. This data set contains measurements of hemispherical spectral reflectance and transmittance factors of individual leaves, needles (ages: current and past 2 years' growth, i.e., for 1993, the growing seasons of 1993, 1992, and 1991 were measured; in 1994, the growing seasons of 1994, 1993, and 1992 were...

LBA-ECO ND-02 Soil Trace Gas Fluxes in Eastern Amazonia, Para, Brazil: 1999-2003

E.A. DAVIDSON, C.J.R. DE CARVALHO & R.D.O. FIGUEIREDO
Changes in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide...

ISLSCP II Global Population of the World

D. BALK, U. DEICHMANN & G. YETMAN
Global Population of the World (GPW) translates census population data to a latitude-longitude grid so that population data may be used in cross-disciplinary studies. There are three data files with this data set for the reference years 1990 and 1995. Over 127,000 administrative units and population counts were collected and integrated from various sources to create the gridded data. In brief, GPW was created using the following steps: * Population data were estimated for the...

Pre-LBA Carbon in the Amazon River Experiment (CAMREX) Data

J.E. RICHEY, R.L. VICTORIA, J.I. HEDGES, T. DUNNE, L.A. MARTINELLI, L. MERTES & J. ADAMS

SAFARI 2000 Tree Ring Data, Mongu, Zambia, Dry Season 2000

V. TROUET
This data set contains tree ring data from three sites located about 25 km of the meteorological station at Mongu, Zambia. Data from about 50 individual trees are reported. In addition, chronologies (or site mean curves) that better represent common influences (e.g., in this study, the climatic signal) were developed for each site based on the individual data (Trouet, 2004; Trouet et al., 2001). The series covers a maximum of 46 years, although most series...

BOREAS TF-11 Biomass Data over the SSA-Fen

D. VALENTINE
The BOREAS TF-11 team collected several data sets in their efforts to fully describe the flux and site characteristics at the SSA-Fen site. This data set contains plant cover, standing crop of plant biomass, and estimated net primary productivity at each chamber site at the end of the 1994 field season. The measurements were conducted as part of a 2x2 factorial experiment in which we added carbon (300 g m-2 as wheat straw) and nitrogen...

LBA Regional Vegetation and Soils, 1-Degree (Wilson and Henderson-Sellers)

M.F. WILSON & A. HENDERSON-SELLERS
This data set contains a subset for the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) of the Wilson and Henderson-Sellers' Global Vegetation & Soils 1-degree data. The data are available in both ASCII GRID and binary image file formats.The Wilson, Henderson-Sellers' Global Vegetation and Soils data set is an archive of soil...

Marie-Victorin Herbarium (MT) from University of Montreal Biodiversity Centre

Luc Brouillet
The Marie-Victorin Herbarium (MT) is the second largest university herbarium in Canada and Quebec, and ranks fourth among all Canadian herbaria. It includes about 620,000+ vascular plants and 50,000+ bryophytes. Half of the material is Canadian, but representation is global. This dataset includes the 135,000+ digitized specimens from the collection.

BOREAS Follow-On FLX-04 Tower Flux and Meteorological Data from NSA Burn Site

M.E. LITVAK, M.L. GOULDEN, S.D. MILLER & S.C. WOFSY
Tower flux and meteorological data were collected above 4 black spruce forest sites in the NSA that experienced stand-replacing wildfires in 1989,1981,1964 and 1930. At each site, 4-6 weeks of data were collected during the peak growing season (June-September) in either 1999 or 2000. Fluxes were measured using paired portable solar powered eddy flux systems. The data are part of an ongoing age sequence study that will result in year round eddy flux and meteorological...

University of British Columbia Herbarium (UBC) - Fungi Collection from University of British Columbia

Olivia Lee
This dataset includes all digitized fungi in the UBC collection, encompassing approximately 95% of the collection.

BOREAS RSS-10 TOMS Circumpolar One-Degree PAR Images

D. DYE & B.N. HOLBEN
The BOREAS RSS-10 team investigated the magnitude of daily, seasonal, and yearly variations of PAR from ground and satellite observations. This data set contains satellite estimates of surface-incident photosynthetically active radiation (PAR, 400-700 nm, MJ m-2) at 1 degree spatial resolution. The spatial coverage is circumpolar from latitudes of 41 to 66 degrees N latitude. The temporal coverage is from May through September for years 1979 through 1989. Eleven-year statistics are also provided: mean, standard...

NPP Multi-Biome: Global Primary Production Data Initiative Products, R2

R.J. OLSON, J.M.O. SCURLOCK, S.D. PRINCE, D.L. ZHENG & K.R. JOHNSON
Net primary productivity (NPP) estimates were compiled by the combined efforts of the Global Primary Production Data Initiative (GPPDI). The database covers 2,523 individual sites and 5,164 half-degree grid cells and underwent extensive review under the Ecosystem Model-Data Intercomparison (EMDI) process. The GPPDI database includes NPP measurements that were collected over a long time period by many investigators using a variety of methods. The measurements are categorized as either Class A, intensively studied sites; Class...

SAFARI 2000 BRDF Measurements at Sua Pan and Skukuza, Dry Season 2000

M. HELMLINGER, W. BUERMANN & F. ECKARDT
The Jet Propulsion Laboratory's (JPL) Portable Apparatus for Rapid Acquisition of Bidirectional Observation of the Land and Atmosphere (PARABOLA), version III, instrument collected radiance data covering both the upwelling and downwelling hemispheres at the Sua Pan salt playa in the Magkadigkadi region of Botswana and at the Skukuza tower site in the Kruger National Park, South Africa between August 25 and October 2, 2000 during in the SAFARI 2000 Dry Season Aircraft Campaign. PARABOLA III...

Pre-LBA Amazonian Region Micrometeorological Experiment (ARME) Data

G. FISCH, J.H. GASH, C.A. NOBRE, W.J. SHUTTLEWORTH & ARME TEAM MEMBERS
The Amazonian Region Micrometeorological Experiment (ARME) data contain micrometeorological data (climate, interception of precipitation, mircometeorology and soil moisture) on the elements of the energy balance and evapotranspiration for the Amazonian forest. ASCII text data files for each of the four data types have been zipped toghether. One of the many scientific findings of this experiment was that tropical forest does not experience water stress due to the lack of precipitation, during periods when evapotranspiration is...

BOREAS Forest Cover Layers of the NSA in Raster Format

D.E. KNAPP & M. TUINHOFF
This data set was processed by BORIS staff from the original vector data of species, crown closure, cutting class, and site classification/subtype into raster files. The original polygon data were received from Linnet Graphics, the distributor of data for MNR. In the case of the species layer, the percentages of species composition were removed. This reduced the amount of information contained in the species layer of the gridded product, but it was necessary in order...

NPP Tropical Forest: La Selva, Costa Rica, 1975-1994, R1

D.A. CLARK
There are two data files with this data set in (.txt) format. The files contain net primary productivity (NPP) data and climate data for a mature tropical lowland rainforest at the La Selva Biological Station, Costa Rica. The La Selva forest reserve (10.43 N, 83.98 W) covers over 1,500 ha, of which 53% is primary forest and the rest is in various types of secondary forest and abandoned land. Above- and below-ground biomass, litterfall, root...

SAFARI 2000 TOMS Aerosol Index Data, Southern Africa, Dry Season 2000

R. MCPETERS, A.M. THOMPSON & D. LARKO
Daily Aerosol Index (AI) data from Earth Probe (EP) Total Ozone Mapping Spectrometer (TOMS) for the period of August 12-September 25, 2000 were processed and provided by the Atmospheric Chemistry and Dynamics Branch at NASA/GSFC for the SAFARI 2000 Dry Season Aircraft Campaign.The TOMS AI is formed directly from measured TOMS radiances in two channels. It is a measure of how much the wavelength dependence of backscattered UV radiation from an atmosphere containing aerosols (Mie...

Global Leaf Area Index from Field Measurements, 1932-2000

J.M.O. SCURLOCK, G.P. ASNER & S.T. GOWER
Approximately 1000 published estimates of leaf area index (LAI) from nearly 400 unique field sites, covering the period 1932-2000, have been compiled into a single data set. LAI is a key parameter for global and regional models of biosphere/atmosphere exchange of carbon dioxide, water vapor, etc. This data set provides a benchmark of typical values and ranges of LAI for a variety of biomes and land cover types, in support of model development and validation...

LBA-ECO LC-15 JERS-1 Synthetic Aperture Radar, 1- km Mosaic, Amazon Basin: 1995-1996

S.S. SAATCHI, B. NELSON, E. PODEST & J. HOLT
This data set contains two image mosaics of L-band radar backscatter and two image mosaics of first order texture. The two backscatter images are mosaics of L-band Radar Backscatter at Horizontal-Horizontal (HH) Polarization created from 1,500 images collected by the Japanese Earth Resources Satellite-1 (JERS-1) Synthetic Aperture Radar (SAR) over the Amazon River Basin as part of the Global Rainforest Mapping Project (GRMP). These backscatter image mosaics were developed using data collected over 62 days...

SAFARI 2000 Physical and Chemical Properties of Aerosols, Dry Season 2000

M. POSFAI, R. SIMONICS, J. LI, P.R. BUSECK & P.V. HOBBS
The Southern African Regional Science Initiative 2000 (SAFARI 2000) provided an opportunity to study aerosol particles produced by savanna burning. We used analytical transmission electron microscopy (TEM), including energy-dispersive X-ray spectrometry (EDS) and electron energy-loss spectroscopy (EELS), to study aerosol particles from several smoke and haze samples and from a set of cloud samples. These aerosol particle samples were collected using the University of Washington Convair CV-580 research aircraft (Posfai et al., 2003).Individual aerosol particles...

Registration Year

  • 2012
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    997
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    725
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    5
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    4
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    1
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    1
  • LDEO - Lamont-Doherty Earth Observatory, Columbia University
    1