The 2006 Antarctic Survey Report - Casey and Macquarie Island - Samim Naebkhil and M DeoEntry ID: survey_2005-2006_geodesy
Abstract: Taken from sections of the report:
Geoscience Australia operates a network of continuous geodetic quality GPS receivers, on geologically stable marks in Australia, Australia Antarctic Territory and in the South Pacific. The network in Australia and in the Australian Antarctic Territory is called the Australian Regional GPS Network (ARGN). The network in the South Pacific is for the South Pacific ... Sea Level Climate Monitoring Program.
These sites provide the geodetic framework for the spatial data infrastructure in Australia, Australian Antarctic Territory and in the South Pacific. They also provide input for the measurement of earth processes, such as crustal dynamics and sea level rise. Data from the ARGN network also contributes to the International GPS Service.
It is important to isolate any local movements such as the stability of the GPS concrete pillar from actual crustal dynamics. Geoscience Australia has routinely performed Reference Mark Surveys at all GPS stations to detect any such movements. The sites are also continually maintained and upgraded with new software and hardware to ensure the continued performance of the site and to meet the user's needs.
At each Antarctic site there is a tide gauge bench mark to which the tide gauge measurement of sea level is related. This bench mark is connected to other nearby marks to monitor any possible vertical movement. In addition, the tide gauge bench mark is connected to a nearby 'Continuously Operating GPS Reference Station', to link the measurement of sea level with the ellipsoidal height accurately measured by GPS.
This work contributed towards AAS (ASAC) project 1159.
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Start Date: 2006-03-01Stop Date: 2006-04-30
Quality The animals counts were done according to convention: sorting
under a stereo microscope after sieving and preservations. A 250
micrometer mesh was used for sieving. Accuracy is unknown. Box
cores likely lose some light epifauna during coring process, but
this is the most common deep-sea infauna collection tool used.
The same procedures were used at all sites and for all species;
findings should be consistent.
Sieve size used: 250 micrometer. Thickness of sampled sediment
layer: top 3 cm (mud layer above solid clay). Box core area:
0.25 square meters. Very small number of samples (11 box cores)
taken in entire study area (Canada Basin, Northwind Ridge,
GPS locations taken from ship log at the time the box core
touched the bottom 4 decimals in GPS reading.
Access Constraints None
Use Constraints Do not redistribute to third parties. When not provided by taxonomist,
taxonomic information was completed using ITIS (e.g. in many cases for ORDER).
Data Set Progress
Role: TECHNICAL CONTACT
Email: bluhm at ims.uaf.edu
IMS/SFOS University of Alaska Fairbanks, P.O. Box 757220
Province or State: Alaska
Postal Code: 99775-7220
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Bluhm et al, 2005, Ocean exploration 2002 Canada Basin, Louis S. St. Laurent,Kugluktuk-Barrow, Aug 13-Sept 8, 2002, 28: 218-231, Polar Biology.
Bluhm, B.A., MacDonald I.R., Debenham, C., Iken, K, 2004, Macro and megabenthic communities in the high Arctic Canada Basin, initial findings paper, Polar Biology, 28: 218-231.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-12-30
Last DIF Revision Date: 2012-12-21