Metadata record for data from ASAC Project 545 See the link below for public details on this project. From the abstract of the referenced paper: Blood was collected for haematological, red cell enzyme and red cell metabolic intermediate studies from 20 Southern elephant seals Mirounga leonina. Mean haematological values were: haemoglobin (Hb) 22.4 plus or minus 1.4 g/dl, packed cell volume (PCV) 54.2 plus or minus 3.8%, mean cell volume (MCV) 213 plus or minus 5 fl and red cell count (RCC) 2.5 x 10 to power 12 / l. Red cell morphology was unremarkable. Most of the red cell enzymes showed low activity in comparison with human red cells. Haemoglobin electrophoresis showed a typical pinniped pattern, ie two major components. Total leucocyte counts, platelet counts, and coagulation studies were within expected mammalian limits. Eosinophil counts varied from 0.5 x 10 to power 9 / l (5%-49%), and there was a very wide variation in erythrocyte sedimentation rates, from 3 to 60mm/h.

The AADC (Australian Antarctic Data Centre) is in the process of converting all internally held spatial datasets to the ITRF2000 horizontal datum. This consolidated dataset consists of surveys HI623_alatB_gg, HI625_alatB_GG, HI632_alat_B_gg, HI632_alat_C_gg, LADSII_MMI20756_HSDB_T0001_SD_100029052_op, LADSII_MMI20756_HSDB_T0001_SD_100029053_op, LADSII_MMI20756_HSDB_T0001_SD_100029054_op converted to ITRF2000 horizontal datum with Z conversion values for multiple height datums. The data was provided to the AAD by Paul Digney of Jacobs consulting in March 2021. Included survey datasets: • HI623_alatB_gg • HI625_alatB_GG • HI632_alat_B_gg • HI632_alat_C_gg • LADSII_MMI20756_HSDB_T0001_SD_100029052_op • LADSII_MMI20756_HSDB_T0001_SD_100029053_op • LADSII_MMI20756_HSDB_T0001_SD_100029054_op All data are in horizontal datum ITRF2000 and have been combined into a single ESRI geodatabase feature class titled AHS_Surveys_Macca_ITRF2000. Attribute data shows quality information, conversion factors (shift in metres) for multiple datums and the MSL orthometric height: Column Name Alias Meaning Easting Easting Easting ITRF2000 Northing Northing Northing ITRF2000 LAT_to_GRS LAT_to_GRS LAT (Chart Datum) to GSR80 LAT_to_Mac LAT_to_Mac LAT to Macca MSL Z_To_GRS80 Z_To_GRS80 Height to the Ellipsoid Z_To_Macca Z_To_Macca Local MSL orthometric height Vertical_U Vertical_U How good is the Vertical Position Horizontal Horizontal How good is the Horizontal Position Uncertaint Uncertaint Uncertainty Comments Depth_Comm Depth_Comments Vertical uncertainty ranges from 0.5 to 1.2 m and horizontal uncertainty ranges from 2 to 5.5 m. Null values indicate unknown uncertainty. See the attached document ‘Metadata_Record_Macqaurie Island Final.xlsx’ for further details.

The RAN Australian Hydrographic Service conducted hydrographic survey HI242 at Macquarie Island in November and December 1996. The main survey areas were Buckles Bay and Hasselborough Bay. Survey lines were also followed from Elliott Reef down the west coast to Langdon Bay and down the east coast to Buckles Bay. The survey dataset, which includes metadata, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LT M.A.R.Matthews. The data are not suitable for navigation.

Metadata record for data from ASAC Project 2212 See the link below for public details on this project. From the abstracts of two of the references: ---------- Ocean Drilling Program hole 504B revealed an ocean crust hydrothermal sulphur anomaly on the dyke-lava transition, with implications for global sulphur sinks. Here we confirm the presence of the anomaly sporadically along 7.5km of dyke-basalt contact on the Macquarie Ridge at Macquarie Island, a 39-9.7 Ma slow-spreading setting. Background contact-zone pyrite S contents average 1845 ppm across ~50 m. However zones of small-scale brittle faulting that commonly occur on and above the dyke-basalt contact average between 5000 and 11000 ppm S (20-30 m widths). These consist of steep ridge-parallel faults and fault splays on the contact, overlain by up to 50m of linked pyritic fault trellis. The contact zone faults are haloed by disseminated pyrite-chlorite, cross-cut by quartz-chlorite-sphalerite and epidote-cemented breccias, containing evidence of turbulent flow. The structural control on sulphur deposition is attributed to the active extensional slow spreading setting. With increasing extension, diffuse mixing across the contact was replaced by channelised flow and dynamic mixing in fault arrays. The magnitude of the dyke-lava transition sulphur sink must be reassessed to take account of this heterogeneity. ---------- There are only a handful of known hydrothermal sulfate occurrences from the mid-ocean ridge crust sub-surface, despite predictions that they should be common because of the imbalance between sulfur concentrations in venting MOR hotsprings, and that of recharging seawater. This deficit indicates that sub-surface sulfate deposition could be a globally important sulfur cycle sink. Therefore any new occurrences add considerably to the information base on sulfate in this environment. An important hydrothermal sulfate occurrence is preserved in ~10 Ma MOR crust on the east coast of Macquarie Island, formed during very slow oblique spreading prior to transition to a magmatic strike-slip plate boundary. The sulfate occurs mainly as white gypsum veins and breccia cement associated with a major fault zone 400m south of Nuggets Point. The site is in the amphibolite facies sheeted dyke and gabbro screen hanging wall of a major northwest-trending graben, itself filled with sub-ziolite facies basaltic breccias and lava flows. The sulfate veins occur as several 2-5m wide vein complexes, with surrounding vein networks over several hundred metres. Veins are strongly associated with oblique-sinistral jogs on a N to NNE-trending fault zone, here termed the Nuggets fault. This fault is intruded by thin, weakly metamorphosed, vesicular sheeted dykes (forming a greater than 30m wide zone) interpreted to have developed contemporaneously with the nearby graben, Gypsum is mainly in the amphibolite facies rocks and the younger dykes, but also occurs as thin gape-fill in dykes of the younger volcanic graben. These field relations indicte that the sulfate veins were emplaced contemporaneously with graben formation and infill, approximately 200m below the sea floor. The host fault zone is contiguous with mapped graben offsets, and is interpreted as an oblique transfer fault. Secondary epidote and quartz-chalcopyrite veining, together with subsequent chlorite-pyrite alteration, predate sulfate, and suggest early hydrothermal upflow conditions. These are cut by vein complexes which display anhydrite relics within foliated gypsum plus or minus pyrite veins surrounded by marginal vein networks of zeolite-gypsum-calcite. These assemblages require central temperatures of greater than 150 degrees C, with a rapid gradation in outer veins to cooler conditions, perhaps less than 100 degrees C. These features imply general cooler recharge conditions; our previous work has shown that this involved a complex history of sub-surface microbial interaction. These field and mineralogical relations provide one predictive tectonic context for the deposition and style of hydrothermal sulfate in extending MOR crust. Sulfate fluid is strongly fault channeled, and rather than occurring in graben boundary faults, deposits precipitates preferentially in transfer faults under-going limited magmatic activity on the graben edge. A description of the fields in this dataset: m from start: metres measured over the ground between sample points. Easting mE, and Northing mE: estimated position relative to the AMG grid used in the 1;10000 mapping series, Mineral Resources Tasmania, using a horizontal datum of WGS 1984. Map date of production, August 1997.

The RAN Australian Hydrographic Service conducted hydrographic survey HI176 at Macquarie Island in December 1993. The main survey area was adjacent to the north-east coast between North Head and The Nuggets. Survey lines were also followed part way down the west coast of the island and in the vicinity of Judge and Clerk Islets and Bishop and Clerk Islets. The survey dataset, which includes metadata, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LT A.J.Withers. The data are not suitable for navigation.

This is a polygon GIS dataset representing penguin colonies on Macquarie Island. The penguin species include Gentoo, King, Rockhopper and Royal.

This dataset contains the results from studies of the Elephant Seal (Mirounga leonina) at Macquarie Island. Results from branding surveys and photographs between 1950 and 1965 are reported. Numbers, life stage, sex, moult stage and migration patterns have been reported.

Ship-based observations of birds, seals and whales from the original 'ANARE Bird Log' books have been recovered into a single repository of sightings and associated abiotic information. ANARE (Australian National Antarctic Research Expeditions) is the historic acronym for these voyages. A few voyages have been included that were not part of ANARE but have Australian observers or volunteer observers. Voyages start from the 1947/48 austral season up to 1982/83 with an average of 3 voyages per season. There are a few voyages where there is no data. It is not known if either no bird observations were undertaken during this period or that the bird logs exist if observations were undertaken. Current counts are birds, seals and whales Observing platforms include the following ships - Wyatt Earp, Tottan, River Fitzroy, Norsel, Kista Dan, Thala Dan, Magga Dan, Nella Dan, Lady Franklin and Nanok S and a single voyage from the private yacht Solo. The quality and quantity of abiotic data associated with observations such as air temperature, sea ice cover etc vary immensely from voyage to voyage. Where possible this data has been entered. This dataset contains very little information on estimates of survey effort and cannot be used to derive useful presence/absence spatial coverages of species during this period. It is purely sighting data only.

Southern elephant seals are among the deepest diving of all marine mammals. This study examined physiological and behavioural mechanisms used by the seals to conserve energy while diving and estimated metabolic rate. Data were collected on Time Depth Recorders (TDRs), and stored in hexadecimal format. Hexadecimal files can be read using 'Instrument Helper', a free download from Wildlife Computers (see the provided URL).

These data were collected as part of project 4112 - Status and trends of Macquarie Island Albatrosses and Giant Petrels: management and conservation of threatened seabirds. These data constitute the data for nesting sites for the 2012-2013 season. The waypoints are provided for all accessible nests of albatross and northern giant petrels that form part of the long term population and demographic study on Macquarie Island. Refer to accompanying annual report for further context and details. For Southern Giant Petrels (which are susceptible to disturbance) the waypoint refers to the location used to census the colony remotely and approximates their actual position.