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Davis Aerodrome Project (DAP) – Marine Current Profiling Data
The Davis Aerodrome Project (DAP) collected a range of environmental survey data over several field seasons to support a comprehensive environmental assessment of the proposed aerodrome. This data includes flora, fauna, soils, lake ecosystem, nearshore, marine, air quality and meteorological information which has been collected by a number of different methods, and extends across the current Davis Station, proposed aerodrome and supporting infrastructure footprint (Ridge Site), previous sites considered for the aerodrome (Heidemann Valley, Adams Flat), as well as locations across the Vestfold Hills away from any of the proposed developments.(this text is standard for all DAP datasets being added to the AADC). This dataset contains short-term nearshore marine current profile data collected to inform environmental assessment processes related to the Australian Antarctic Division’s DAP and Davis Masterplan projects. Eight current meter deployments were undertaken across six sites in the nearshore marine environment in the vicinity of Davis Research station. Deployment periods ranged from three days (3 x 24hr tide cycle) to two weeks. Sites were selected based on the location of previous sampling activity (CM1-5) and sites of interest to Davis Aerodrome and Davis Masterplan projects with regard to proposed future developments in the area. A second deployment was undertaken at two key sites to increase the sampling interval at each. Data was collected using a Nortec Aquadopp Profiler 1 MHz. The same instrument was used to collect current profiles at all sites. The instrument was deployed through a 40cm hole drilled through the seaice. It was suspended horizontally in the water column (mid-way between the seafloor and the under surface of the ice) by a bridal attachment and rope secured at the surface (see figure below). A 15cm fin was attached to the base of the instrument for all deployments. In shallow locations the instrument was positioned so that it could not hit the seafloor throughout the lowest tidal cycle during the deployment. The profile interval was set to record every 900 seconds (15min) for a period of 120 seconds (2min). All instrument settings and recording details are contained in the hdr files saved in each data folder. Start and end dates and times are set out in the “current meter deployment details” spreadsheet. Temporal coverage Site No. Deployment Date Retrieval Date CM1 22/10/2021 2/22/2021 CM2 16/09/2021 19/09/2021 CM2 9/10/2021 22/10/2021 CM3 3/11/2021 12/11/2021 CM5 24/11/2021 4/11/2021 ML 8/12/2021 14/12/2021 OptionA 29/09/2021 2/10/2021 OptionA 14/12/2021 20/12/2021 Spatial coverage CM2_01_20210919 68.57399536 77.96031373 OptionA_01_20211002 68.57597253 77.96121253 CM2_02_20211022 68.57399536 77.96031373 CM1_01_20211102 68.57749077 77.95758156 CM3_01_20211112 68.57276237 77.94873464 CM5_01_20211204 68.58321738 77.9180513 ML_01_20211214 -68.58381482 77.94507546 OptionA_02_20211220 68.57585945 77.96151685
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MS Nella Dan Voyage V2 1982/83 (ADBEX1) Track and Underway Data
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This dataset contains the underway data collected during the MS Nella Dan Voyage V2 1982/83 (ADBEX1). Voyage name : Antarctic Division BIOMASS Experiment I Voyage leader: Knowles Ronald Kerry Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).
MS Nella Dan Voyage V5 1980/81 (FIBEX) Track and Underway Data
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This dataset contains the underway data collected during the MS Nella Dan Voyage V5 1980/81 (FIBEX). Voyage name : First International BIOMASS Experiment Voyage leader: Knowles Ronald Kerry Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).
Heard Island fishing survey, Aurora Australis marine science cruise au0404 ("HIPPIES") - ship-based CTD, ADCP and underway data
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Oceanographic data were collected on Aurora Australis Voyage 4 2003/2004, from December 2003 to February 2004, and a calibrated data set was created. The oceanographic program on the voyage was a part of the cruise-determining fish survey in the vicinity of Heard Island. A total of 42 CTD vertical profile stations were taken, most to within 5 m of the bottom. Over 450 Niskin bottle samples were collected and analysed on board, for calibration of the CTD conductivity sensors. Nutrient samples were also collected, but not analysed. Near surface current data were collected using a ship mounted ADCP. Data from the array of ship's underway sensors are included in the data set. The data report describes the processing/calibration of the CTD and ADCP data, and gives important details concerning data quality. An offset correction was derived for the underway sea surface temperature and salinity data, by comparison with near surface CTD data. These data form part of the overall dataset for ASAC project 2388 (ASAC_2388).
Dease Inlet 2023
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Timeseries data from 'Dease Inlet 2023' (dease-inlet)
Nella Dan: ADBEX II Cruise - Oceanography data
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This dataset contains CTD (conductivity, temperature, depth) data obtained from the ADBEX II (= SIBEX I) cruise of the Nella Dan, during Jan - Feb 1984. 22 CTD casts were taken in the Prydz Bay region.
Dease Inlet 2025
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Timeseries data from 'Dease Inlet 2025' (dease-inlet-2025)
ADCP data collected during the SAZ-SENSE voyage, January-February 2007
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Metadata record for data from ASAC Project 2720 See the link below for public details on this project. The overall objective is to characterise Southern Ocean marine ecosystems, their influence on carbon dioxide exchange with the atmosphere and the deep ocean, and their sensitivity to past and future global change including climate warming, ocean stratification, and ocean ... acidification from anthropogenic CO2 emissions. In particular we plan to take advantage of naturally-occurring, persistent, zonal variations in Southern Ocean primary production and biomass in the Australian Sector to investigate the effects of iron addition from natural sources, and CO2 addition from anthropogenic sources, on Southern Ocean plankton communities of differing initial structure and composition. These samples were collected on the SAZ-SENSE scientific voyage of the Australian Antarctic Program (Voyage 3 of the Aurora Australis, 2006-2007 season). SAZ-SENSE VOYAGE AU0703 ADCP DATA The complete ADCP data for cruise au0703 are in the files: au070301.cny (ascii format) a0703dop.mat (matlab format) The "on station" ADCP data (specifically, the data for which the ship speed was less than or equal to 0.35 m/s) are in the files: au0703_slow35.cny (ascii format) a0703dop_slow35.mat (matlab format) The file bindep.dat shows the water depths (in metres) that correspond to the centre of each vertical bin. The data are 30 minute averages. Each 30 minute averaging period starts from the time indicated. (so, e.g., an ensemble with time 120000 is the average from 120000 to 123000). ADCP currents are absolute - i.e. ship's motion has been subtracted out. Note that the top few bins can have bad data from water dragged along by the ship. Beware of data when the ship is underway - it's often suspect. Important data quality information can be found in the data report referenced above. The figure a0703difship30.eps shows the speed difference between vertical bin 2 and all other bins, where the data have been divided up into different speed classes for ship speed. The apparent vertical shear for bins ~1-10, and below bin ~40, is an error, possibly due to acoustic ringing from an air/water interface in the seachest. Data where ship speed is 0 to 1 m/s does not show this error.
Environmental monitoring of the atmosphere over the Southern Ocean
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The United States Department of Energy - Environmental Measurements Laboratory located in New York City has been monitoring the naturally occurring and man-made radionuclides for the past 40 years throughout the world. We have been using simple and very rugged air sampler which collect air from the surrounding environment. With this method and diverse location of sampling stations we have been able to detect with gamma counting method Beryllium 7, lead 210 as natural radionuclides and also some anthropogenic or man-made radionuclides such as Zirconium 95, Cesium 137, Cerium 144 which half-lives are fairly long. Come to visit us at: http://www.wipp.energy.gov/NAMP/EMLLegacy/index.htm and search for databases especially Surface Air Sampling Program. The Surface Air Sampling Program (SASP) database provides information on EML's archived air filter samples and sample measurements. The program was established in 1957 to track the global dispersion of radioactive debris resulting from atmospheric testing of nuclear bombs. Air filter samples were collected at locations throughout the world and analyzed for nuclear debris. In the 1980's, the program focused on the global distributions of the naturally occurring radionuclides, beryllium-7 and lead-210. The resulting database is the most comprehensive and extensive record of its kind in the world.
Nella Dan: ADBEX III Cruise - Oceanographic and nutrient data
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This dataset contains CTD (conductivity, temperature, depth) and nutrient (nitrate, nitrite, phosphate, silicate, manganese) data obtained from the Antarctic Division BIOMASS Experiment III (ADBEX III) cruise of the Nella Dan, during Sep - Dec 1985. This cruise is the fifth cruise out of a series of six, conducting a long term field survey on krill and other zooplankton. 50 CTD casts were taken in the Prydz Bay region, and nutrient data were collected at 25 of the stations. Casts were made to 2000 m or to near bottom over the continental shelf. The oceanographic and nutrient programs were subordinate to other programs and so the locations of the CTD stations were not always ideal for oceanographic purposes. The fields in this dataset are: pressure temperature salinity volume geopotential samples deviation conductivity