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}NASA Earthdata CMR + NASA Data Portal2025 · Image data
Delta-X: Soil Accretion Rates from Cs-137 Activity and NUMAR Validation, MRD, LAThis dataset holds measurements of Cesium-137 (137Cs) activity sampled from sites in the Atchafalaya and Terrebonne Basins on the southern coast of Louisiana, USA. Sediment cores were taken to validate modeled estimates of soil accretion rates. The NUMAR model was designed to predict soil properties and corresponding accretion rates in marsh environments. This study explored whether the probabilis
NASA Earthdata CMR + NASA Data Portal2025 · Image data
Delta-X: Sediment Core Grain Size Distribution, Wax Lake Delta, MRD, LAThis dataset provides grain size distribution measurements collected from sediment core samples on Mike Island in the Wax Lake Delta, Louisiana, as part of the Delta-X Spring campaign in March, 2021,and the Fall campaign during August, 2021. The data are for March 26 and 29, and August 18 and 24. Sediment cores were collected using a piston core, then volume-based grain size distribution for each
NASA Earthdata CMR + NASA Data Portal2025 · Image data
Delta-X: Feldspar Sediment Accretion Measurements, MRD, LA, USA, 2019-2023, Version 4This dataset provides elevation, hydrogeomorphic zone classification, soil carbon content, bulk density, organic matter content, and sediment accretion measurements collected at feldspar stations established near Louisiana's Coastwide Reference Monitoring Systems (CRMS) sites and on Mike Island in Wax Lake Delta (WLD). Feldspar stations were established to capture recent sediment deposition rates
NASA Earthdata CMR + NASA Data Portal2023 · Image data
Delta-X: Root Stable Isotopes from Herbaceous Wetlands, MRD, LA, USA, August 2021This dataset contains carbon-13 (13C) and nitrogen-15 (15N) isotopic signatures of belowground root biomass samples from herbaceous wetlands in the Atchafalaya and Terrebonne basins of the Mississippi River Delta in coastal Louisiana, U.S., during August 2021. The data were collected during the Delta-X Fall deployment. Field measurements were conducted at three sites in the Atchafalaya basin and t
NASA Earthdata CMR2022 · collection
Collaborative Research: Reconstructing Late Holocene Ecosystem and Climate Shifts from Peat Records in the Western Antarctic PeninsulaWarming on the western Antarctic Peninsula in the later 20th century has caused widespread changes in the cryosphere (ice and snow) and terrestrial ecosystems. These recent changes along with longer-term climate and ecosystem histories will be deciphered using peat deposits. Peat accumulation can be used to assess the rate of glacial retreat and provide insight into ecological processes on newly d
NASA Earthdata CMR2022 · collection
Diatom data from voyage 1 of the Investigator, 2017 - PC03 analysisThese data were generated by Raffaella Tolotti (raffaella.tolotti@virgilio.it) thanks to a scholarship founded by the Italian P.N.R.A. ‘TYTAN Project (PdR 14_00119): ‘Totten Glacier dYnamics and Southern Ocean circulation impact on deposiTional processes since the mid-lAte CeNozoic’ (Principal Investigator Dr. Donda Federica, Dr. Caburlotto A. - OGS, Trieste) and University of Genova (DISTAV - Pro
NASA Earthdata CMR2021 · collection
2000 year record of environmental change from an unnamed lake on Macquarie IslandAge-depth and geochemical data for a 2000 year lake sediment record from an unnamed lake on Macquarie Island. The lake is the small lake to the west of Major Lake, on the edge of the Macquarie Island plateau. The chronology is based on lead-210 (last ca. 100 years) and radiocarbon (extending to ca. 2000 years). Geochemistry is based on micro x-ray fluroescence, and carbon, nitrogen and sulphur con
NASA Earthdata CMR2021 · collection
Curatorial Stewardship of the Antarctic and the Southern Ocean National Collection of Rock and Sediment Cores at the OSU Marine and Geology RepositoryNontechnical Description The Antarctic core collection, curated at Florida State University since 1963, is one of the world's premier marine geology collections. Consisting of irreplaceable sediment cores, this archive has greatly advanced the understanding of the Earth system, past and present, and will remain critical to future studies of the Earth. Given Oregon State University's (OSU) leadersh
NASA Earthdata CMR2021 · collection
12,000 year record of sea spray and minerogenic input from Emerald Lake, Macquarie IslandReconstructed sea spray and minerogenic data for a 12,000 year lake sediment record from Emerald Lake, Macquarie Island. Proxies are based on biological (diatoms) and geochemical (micro x-ray fluorescence and hyperspectral imaging) indicators. Data correspond to the figures in: Saunders et al. 2018 Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing. Na
NASA Earthdata CMR2020 · collection
Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment ProvenanceAbstract for the general public:<br/><br/>The margins of the Antarctic ice sheet have advanced and retreated repeatedly over the past few million years. Melting ice from the last retreat, from 19,000 to 9,000 years ago, raised sea levels by 8 meters or more, but the extents of previous retreats are less well known. The main goal of this project is to understand how Antarctic ice retreats: fast or
NASA Earthdata CMR2020 · collection
Casey marine sediment meiofauna 2005Marine sediment meiofauna community composition and sediment environmental data collected in 2005 and published in Stark, J. S., M. Mohammad, A. McMinn, and J. Ingels. 2020. Diversity, abundance, spatial variation and human impacts in marine meiobenthic nematode and copepod communities at Casey station, East Antarctica. Frontiers in Marine Science 7:480. From the abstract: The composition, spatial
NASA Earthdata CMR2019 · collection
NSF-NERC: THwaites Offshore Research (THOR)This project contributes to the joint initiative launched by the U.S. National Science Foundation (NSF) and the U.K. Natural Environment Research Council (NERC) to substantially improve decadal and longer-term projections of ice loss and sea-level rise originating from Thwaites Glacier in West Antarctica. Satellite observations extending over the last 25 years show that Thwaites Glacier is rapidly
NASA Earthdata CMR2019 · collection
Marine macrofaunal invertebrate community composition from sites sampled around Davis Station, East Antarctica, as part of the Davis Sewage Treatment Project, summer 2009/10Marine macrofaunal invertebrate community composition data from 30 sites sampled by divers around Davis Station, East Antarctica, for the Davis Sewage Treatment Project during the 2009/10 summer. Soft-sediment infauna were sampled using a core of PVC tubing (15cm long x 10cm diameter) pushed 10cm into the sediment. Lids were placed on the top and, after some digging, on the bottom of the core and
NASA Earthdata CMR2019 · collection
Diatom identification and counts from 7 multicore locations on Kerguelen Plateau, Southern OceanThis dataset was collected as part of an honours project by Jessica Wilks at Macquarie University (submitted May 2012). The samples analysed were taken from an expedition conducted by Dr Leanne Armand in 2011 as part of the KEOPS2 mission (KErguelen: compared study of the Ocean and the Plateau in Surface water). During this mission 7 locations (A3-1, A3-2, E1-3, E14W2, NPF-L, R2 and TEW) around th
NASA Earthdata CMR2019 · collection
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14Ice-rafted debris is characterised by coarse material with typically angular grains, transported within icebergs and deposted in the ocean as the icebergs melt. This iceberg rafted debris (IBRD) flux data submitted here, was calculated by quantifying the coarse sand fraction (CSF) as a percentage of the bulk sample (weight of grains in the 250 micron to 2 mm size fraction), the dry bulk density (D
NASA Earthdata CMR2019 · collection
Foraminiferida in the Mac. Robertson Shelf–Prydz Bay region, East Antarctica: distribution and controls - unfinished studyThese data are linked to what appears to be an unfinished report/paper by Pat Quilty. An extract of the unfinished report is available below, and the full document is included in the data download. These data are also linked to a collection in the biodiversity database, and are also related to another record (both listed at the provided URLs). Foraminiferids are recorded from samples collected on
NASA Earthdata CMR2019 · collection
Quaternary Glacial History and Paleoenvironments of the East Antarctic MarginUSAP-9909367', 1, 'This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports a multi-institutional, international (US - Australia) marine geologic and geophysical investigation of Prydz Bay and the MacRobertson Shelf, to be completed during an approximately 60-day cruise aboard the RVIB N.B. Palmer. The primary objective is to develop a record o
NASA Earthdata CMR2018 · Raster · GeoTIFF
Evidence for Paleo Ice Stream Collapse in the Western Ross Sea since the Last Glacial MaximumIntellectual Merit: The PI hypothesizes that bedforms found in the Central and Joides troughs can be interpreted as having been formed by rapid retreat, and possible collapse of an ice stream that occupied this area. To test this hypothesis, the PI proposes to conduct a detailed marine geological and geophysical survey of Central and Joides Troughs in the western Ross Sea. This project will bridge
NASA Earthdata CMR2017 · collection
Sediment metal data (1M HCl extraction) from the Davis STP (Sewage Treatment Plant upgrade) projectUntreated, macerated wastewater effluent has been discharged to the sea at Davis Station since 2005, when the old wastewater treatment infrastructure was removed. This environmental assessment was instigated to guide the choice of the most suitable wastewater treatment facility at Davis. The assessment will support decisions that enable Australia to meet the standards set for the discharge of wast
NASA Earthdata CMR2017 · collection
SRE4 Effects of hydrocarbons on Antarctic Marine Sediment Ecosystems - SRE4_MeiofaunaSediment Recruitment Experiment 4 (SRE4) was a large, long term (5 year) field experiment run at Casey Station (from 2001 to 2006) testing the effects of 4 different hydrocarbons on marine sediment ecosystems. Four different types of hydrocarbons were individually mixed with defaunated marine sediments and deployed in trays on the seabed at O'Brien Bay-1. Trays were collected after deployment peri
NASA Earthdata CMR2016 · collection
Vegetation History and Environmental Change on Macquarie IslandMetadata record for data expected from ASAC Project 777, Vegetation History and Environmental Change on Macquarie Island Studied by Analysing Present Vegetation and the Underlying Peat on Slopes Subject to Peat Slides. See the link below for public details on this project. This project provided funding for a PhD thesis, and all known publications associated with the project are listed in the refer
NASA Earthdata CMR2016 · collection
Report on sediment core activities at Davis Station in 1985 by Lin Jian-pingThis is a scanned copy of the report of sediment core activities at Davis Station, 1985 by Lin Jian-ping. Paraphrased from the abstract of the report: Sediment deposited in the bottom of water provide a historical record of the biological and chemical changes which have occurred in the places since they were formed. One of the research programs at Davis in 1985 was the sediment coring program. Sed
NASA Earthdata CMR2015 · collection
Environmental and diatom data obtained from a survey of Campbell Island's lakes and ponds 2010-2011Public Summary of AAS project 4156 - High resolution reconstructions of climate and ecosystem variability in the sub-Antarctic during the last two millennia Our understanding of global climate and ability to predict future changes is limited by a lack of long-term (palaeoclimate) data from the Southern Hemisphere (SH). Sub-Antarctic islands are the only landmasses between Antarctica and the mid la
NASA Earthdata CMR2013 · collection
Amery Ice Shelf - hot water drill borehole, 2010-11 - AM06Amery Ice Shelf AM06 borehole drilled early January 2010. Sub-shelf water profiling measurements conducted over a period of a few days. Partial video recording of borehole walls and sea floor benthos. Collection of targeted ice core samples. Sediment sample collected from sea floor. Long term monitoring instruments installed (thermistors in ice, 3 x CTD in ocean cavity). This is a parent record -
NASA Earthdata CMR2013 · collection
Amery Ice Shelf - hot water drill borehole, 2009-11 - AM05Amery Ice Shelf AM05 borehole drilled mid-December 2009. Sub-shelf water profiling measurements conducted over a period of a few days. Partial video recording of borehole walls and sea floor benthos. Collection of targeted ice core samples. Sediment sample collected from sea floor. Long term monitoring instruments installed (thermistors in ice, 3 x CTD in ocean cavity). This is a parent record - s