The RAN Australian Hydrographic Service conducted hydrographic survey HI514 at Mawson, February to March 2012. The areas surveyed were the entrance to Horseshoe Harbour and the western side of West Arm. There is also a single line of soundings east of Evans Island. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download (see a Related URL). The vertical datum of the soundings is Lowest Astronomical Tide, 0.83 metres below Mean Sea Level. The survey was lead by LT C.E.Diplock. The data are not suitable for navigation.

A high resolution bathymetric grid of the nearshore area at Casey station, Antarctica was produced by Geoscience Australia by combining data from two multibeam hydrographic surveys: 1) A survey conducted by the Royal Australian Navy in 2013/14. Refer to the metadata record 'Hydrographic survey HI545 by the RAN Australian Hydrographic Service at Casey, December 2013 to January 2014' with ID HI545_hydrographic_survey. 2) A survey conducted by Geoscience Australia and the Royal Australian Navy in 2014/15. Refer to the metadata record 'Hydrographic survey HI560 by the RAN Australian Hydrographic Service at Casey, December 2014 to February 2015' with ID HI560_hydrographic_survey and the metadata record 'Seafloor Mapping Survey, Windmill Islands and Casey region, Antarctica, December 2014 - February 2015' with ID AAS_3326_seafloor_mapping_casey_2014_15. The grid has a cell size of one metre and is stored in a UTM Zone 49S projection, based on WGS84. Further information is available from the Geoscience Australia website (see a Related URL).

This dataset (provided as a series of CF-compatible netcdf file) consists of 432 consecutive maps of Antarctic landfast sea ice, derived from NASA MODIS imagery. There are 24 maps per year, spanning the 18 year period from March 2000 to Feb 2018. The data are provided in a polar stereographic projection with a latitude of true scale at 70 S (i.e., to maintain compatibility with the NSIDC polar stereographic projection).

Imagery of Aurora Australis and sea ice captured by a 'quadcopter' (Inspire) drone launched from the ship

In January 2005 a multi-parametric international experiment was conducted that encompassed both Deception Island and its surrounding waters. This experiment used as main platforms the Spanish Oceanographic vessel 'Hesperides', the Spanish Scientific Antarctic base 'Gabriel de Castilla' at Deception Island and four temporary camps deployed on the volcanic island. This experiment allowed us to record active seismic signals on a large network of seismic stations that were deployed both on land and on the seafloor. In addition other geophysical data were acquired, such as: bathymetric high precision multi-beam data, and gravimetric and magnetic profiles. During the whole period of the experiment a multi-beam sounding EM120 was used to perform bathymetric surveys. The characteristic of this sensor permitted to reach up to 11.000 m b.s.l. In table 2 we provide some of its main characteristics. During the experiment different bathymetric profiles were performed with this equipment outside of Port Foster. Some of these images already have provide an accurate vision of the region, and were used to estimate the real size of the water column locate below each shoot. Additional information of these data could be found in the Lamont-Doherty Earth Observatory at IEDA Marine Geoscience Data System (http://www.marine-geo.org/). It is possible to access the summary of downloads that were made of these data and documents at http://www.marine-geo.org/about/downloadreport/person/Ibanez_Jesus/2016A.

Taken from sections of the report: 1. Introduction This report details the survey work carried out on Macquarie Island during November 1997 by LANDINFO staff on behalf of the Australian Antarctic Division's Mapping Program. The main task of the survey team was to acquire aerial photography of the island to enable the production of a new topographic map of the island. Other tasks involved field checking the digital station area map (DSAM) and providing support to the tide gauge maintenance team. The following team carried out the survey-mapping work: Tom Gordon LANDINFO Surveyor Roger Handsworth Antarctic Division Engineer Although this report touches on the work carried out by Roger Handsworth and Rupert Summerson, it does not cover the specifics of their work. 2. Project Brief The survey-mapping brief lists the following tasks: 1. Aerial Photography of the Island and station area. 2. Aerial Photography of Judge and Clerk Island to the south and Bishop and Clerk Island to the north of Macquarie Island. 3. Second order levelling from the tide gauge bench marks to AUS 211 4. Updating the Digital Station Area map. These tasks are listed in order of priority. A copy of the survey brief for Macquarie Island is included in Appendix A.

The TOMO-DEC experiment was organized in three main legs: (1) a search for sites to deploy seismic stations and for temporary camps to accommodate the researchers (austral summer 2003-2004); (2) the field phase of data collection during the austral summer 2004-2005; and finally (3) a laboratory phase of data gathering, organization and analysis, that still ongoing as papers continue to be published. The preliminary analysis of data involved an initial phase of data gathering from instruments of different types, their organization in a joint database, their conversion to a common format and, finally, the determination of the first P-wave arrival times. Leg 1 was performed during two summer field expeditions (2002-2003 and 2003-2004). The whole island was surveyed (including glacial areas) in order to identify potential sites for seismic stations and camps. Leg 2 took place between December 2004 and March 2005 with most of the activity focused in the deployment of seismic stations (on land and OBSs), air-gun shooting, data collection and final recovery of the majority of the seismic stations. This experiment took place between January 4 and January 24, 2005. Ninety-five on-land seismic stations and 14 OBSs were deployed. They included 7 Lennartz Marslite seismic stations (covering 14 positions), four M24 instruments (covering 7 positions) and 11 seismic arrays (with 84 short period sensors, occupying a total of 101 different positions), all of them working in continuous recording mode. Active seismic sources were generated using an array of air-guns with a maximum capacity of 3520 cubic inches. Together with the seismic waveforms, a final dataset consisting of travel times for more than 70000 crustal P-wave first arrivals was collected. Bathymetric data were recorded using both EM120 and EM-1002 multi-beam sounders and a SIMRAD EA-600 single-beam sounder. Magnetic profiles were obtained using the MarineMagnetics SEASPY marine magnetometer on the base of an Overhauser sensor. Finally gravimetric data were acquired using the marine gravimeter BELL AEROSPACE-TEXTRON BGM-3. In total more than 1000 km of profiles were acquired with all types of data. The experiment at Deception Island was organized in collaboration with several research institutions. For the field work and data collection the following institutions (with number of researchers and provided instruments) participated: Instituto Andaluz De Geofisica, Spain (12, 10 land seismic arrays of malIAG type); Lamont Doherty Earth Observatory, Columbia University, USA (4, 14 OBS); INGV-Osservatorio Vesuviano, Italy (1, 7 land stations of Marslite type); INGV-Catania, Italy (1, 4 land stations of M24 type); CENAPRED, Mexico (1); Universidad De Cadiz, Spain (2); Universidad De Colima, Mexico (1); University College Dublin, Ireland (1); Universidad Complutense De Madrid, Spain (1); Universidad De La Plata, Argentina (1); University Of Washington, USA (3); USGS Volcanic Hazard Team, USA (2).

Taken from sections of the report: Introduction This report details the survey work carried out on Voyage 4 during November and December 1998 by LANDINFO on behalf of the Australian Antarctic Division's MAGIP Field Program. The principle aim of this work was to acquire aerial photography of penguin rookeries near Australia's three Antarctic Stations and to carry out survey work associated with the Antarctic Tide Gauge Network. A number of other tasks were also carried out. This report details each task carried out and the results achieved. The following people carried out the survey work: Richard Lemon LANDINFO Pty Ltd Roger Handsworth Antarctic Division Instrument Engineer This report covers the fieldwork associated with the MAGIP Field Program. Some non survey aspects of the tide gauge work will be the subject of a separate report to be submitted by Roger Handsworth. Time Frame The survey party departed Hobart at 5:15pm on Thursday 29th October 1998 aboard the Aurora Australis on Voyage 4 of the 1998-99 summer season. The survey party arrived at Casey Station via helicopter from the Aurora Australis just before 12pm (UTC+8) on Saturday 7th November. After spending a period of about 25 hours at Casey the survey team returned to the Aurora Australis at about 1pm on Sunday 8th November 1998. The Aurora Australis arrived off Davis Station on the morning of Wednesday 18th November 1998. The survey party had access to the station from about 2.30pm (UTC+7) the same day. The survey team had four full days in which to carry out its tasks at Davis. The Aurora Australis left Davis on the morning of Sunday 22nd November on route to Sansom Island. The survey party returned to the Aurora Australis by helicopter at about 7:30pm on Sunday 22nd November. The survey party was flown to Sansom Island at about 9:30am on Monday 23rd November and returned to the Aurora Australis at about 3:30pm the same day. Due to problems with Aurora Australis' propeller pitch control, the survey party was flown to Mawson Station by long range helicopter on Wednesday 2nd December and arrived at about 8:30am (UTC+6). The survey team had eight full days at Mawson station before departing for the Ship on Thursday 10th December at about 11am. The Aurora Australis returned to Fremantle at about 11am Western Standard Time (UTC+8) on Monday 28th December 1998. Project Outline The Antarctic Division's Brief, which outlines the details of the program, is included in Appendix A. The program of work was divided into four specific sites, Casey, Davis, Mawson and Sansom Island. The work at each of the Antarctic stations was divided into two main areas of interest. These being the aerial photography of the penguin rookeries using the Linhof camera and survey work associated with the tide gauges and tide gauge bench marks. The work at Sansom Island involved the coordination of photo control points. A list of the individual tasks and a summary of the achievements can be found at Appendix B.

Increased ultraviolet radiation (UV-A and/or UV-B) may impact on the establishment and structure of a shallow water benthic invertebrate assemblages. A global experiment in more than 8 countries, using an identical methodology (transparent UV filters) will add significantly to our understanding of the impacts of anthropogenically induced global change on natural systems. To appraise the effects of increased UVR on shallow marine benthic assemblages, five experimental rafts were deployed in protected bays west of Shirley Island near Casey Station, Antarctica (66.16oS 110.30oE). Each raft consisted of eight experimental units, each of which contained a colonization panel (ceramic tile) positioned horizontally and submerged 4-6 cm underwater. Irradiation treatments were randomly assigned to each unit with the use of UV cut-off filters. The treatments were as follows: No UVR (transmits photosynthetically active radiation or PAR, 400-700nm), No UVB (transmits PAR + UVA, 320-700nm), Perspex (full spectrum, 280-700nm, procedural control), or No filter (full spectrum, treatment control). In addition there were three levels of consumer treatments: With consumption (container sides removed), without consumption (container sides perforated with 4 mm holes), and a control (3 sides perforated, 1 side removed). After seven weeks tiles were removed to the laboratory for examination. All tiles were dominated by diatoms and no sessile invertebrates were apparent. The first trial has been completed, but several other panels are still in place. A conference will be held in early 2002 between participating countries to discuss results and findings. The 2001\2002 summer season consisted of experimental designs divided up into three separate projects. The aims were all to provide a corrollary to the previous seasons data. Project 1 consisted of the extraction and redeployment of settlement depth arrays situated in Geoffrey's Bay and Hollin Island Channel. Due to prevailing weather conditions resulting in limited boating hours and diving program, only one array was retrieved. On inspection of the array it was decided to deploy further replicates to gain a better temporal understanding of the communities. Projects 2 and 3 consisted of a similar experimental design, however monitoring the shallower depths of settlement (depths of 1m and 2m below sea level) for a period of one month. Project 2 consisted of arrays with two depths and 2 panels per depth, triple replicated, under the icesheet in O'Brien Bay and Shirley Channel, with a substrate depth of 20m. Diatom samples are to be analyzed in Australia. Project 3 was of a similar design to project 2 though it was measuring recruitment in shallow open water. The two sites consisted of Noonan Cove and Geoffrey's Bay at substrate depths of 5m. These tiles are also to be analyzed on return to Australia. There were 5 rafts used in this study - they are listed as R1 to R5 there were two factors in the design -(i) predator access: Caged (C) Half caged (H) and Open (O) and ii) UV exposure: Perspex (P), Macrolon (M), No filter (N) and Film + perspex (F). A list of the diatoms found on the settlement panels is provided at the URL below. The fields in this dataset are: Species Sample

Taken from sections of the report: The aim of the survey and mapping program on V5.1 was to carry out various surveying tasks at Mawson and Casey as listed later in this report. The vessel used in Voyage 5.1 was The Polar Queen. Voyage 5.1 left Capetown on Thursday 18th February and arrived Fremantle Friday 19th. March. Depart Capetown Thursday 18th February Arrive Mawson Sunday 28th February Depart Mawson Tuesday 2nd March Arrive Davis Thursday 4th March Depart Davis Thursday 4th March Arrive Casey Monday 8th March Depart Casey Thursday 11th March Arrive Fremantle Thursday 18th March The survey team was: Henk Brolsma Australian Antarctic Division - surveyor. John Hyslop Australian Antarctic Division - volunteer surveyor. The surveying at Mawson and Casey included bringing the data representing the station infrastructure up to date. The station infrastructure data is available for download in GIS format (shapefiles) from Related URLs below. The data resulting from this survey has a Dataset_id of 15. The data is formatted according to the SCAR Feature Catalogue. For data quality information about a particular feature use the Qinfo number of the feature to search for information using the 'Search datasets and quality' tab at a Related URL below. Matt King, Rachel Manson and Lee Palfrey assisted with survey work at Casey. They carried out GPS surveys for aerial photo control, Casey and Wilkes, tide gauge bench marks at Casey, buildings detail at Wilkes and route markers around the station. Their work is not covered in this report.