K-Axis Science Event Log with derived latitude and longitude from underway data

• Other Authors: AADC (originator), AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; environment; oceans; PLANKTON; EARTH SCIENCE; BIOLOGICAL CLASSIFICATION; PROTISTS; ZOOPLANKTON; BIOSPHERE; AQUATIC ECOSYSTEMS; PHYTOPLANKTON; FISH; ANIMALS/VERTEBRATES; RAY-FINNED FISHES; STABLE ISOTOPES; OCEAN CHEMISTRY; OCEAN TEMPERATURE; EARTH SCIENCE SERVICES; ENVIRONMENTAL ADVISORIES; MARINE ADVISORIES; SALINITY/DENSITY; BALEEN WHALES; MAMMALS; CETACEANS; BIRDS; SEALS/SEA LIONS/WALRUSES; CARNIVORES; OCEAN ACOUSTICS; FLUORESCENCE; OCEAN OPTICS; NUTRIENTS; OXYGEN; EUPHAUSIIDS (KRILL); ANIMALS/INVERTEBRATES; ARTHROPODS; CRUSTACEANS; TRACE ELEMENTS; EVENT LOG; K-AXIS; ANTARCTIC GATEWAY PARTNERSHIP; ACOUSTIC SOUNDERS; CTD > Conductivity; Temperature; Depth; NORPAC ZOOPLANKTON NET; CPR > Continuous Plankton Recorder; PAM > PORTABLE FLUORESCENCE ANALYZERS; HPLC > High-Performance Liquid Chromatograph; TRAWL; CAMERAS; NISKIN BOTTLES; BONGO NETS; PLANKTON NETS; BINOCULAR > BINOCULAR; R/V AA > R/V Aurora Australis; PROFILING FLOAT; MOORINGS; AMD/AU; AMD; CEOS; GEOGRAPHIC REGION > POLAR; OCEAN > INDIAN OCEAN > KERGUELEN ISLANDS; SOUTHERN OCEAN > KERGUELEN PLATEAU; BANZARE BANK; PRINCESS ELIZABETH TROUGH; CONTINENT > ANTARCTICA; Antarctic; Southern Ocean; Kerguelen; Kerguelen Islands; Indian; Princess Elizabeth Trough; Banzare Bank; Antarc*; Antarctica; aurora australis; baleen whales; walrus*
• Online Access: https://researchdata.ands.org.au/k-axis-science-longitude-underway/754231; https://data.aad.gov.au/metadata/records/AAS_4344_K-AXIS_Science_Event_Log_UW_LatLon; https://data.aad.gov.au/eds/4268/download; https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4344_K-AXIS_Science_Event_Log_UW_LatLon; https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=AAS_4344

This is a direct transcription of the paper logbook with additional start lat and start lon fields interpolated from ship navigation data, matched on start time/date. There are uncorrected errors in lat/lon/time/sample event code. These will be flagged and corrected in a quality controlled version of the log. Where there is a large discrepency between start lat/lon and interpolated lat/lon, the latter may be considered to be more accurate. Refer to the eventlog_matchup.html file for details of lat/lon interpolation. During the K-Axis marine voyage from mid Jan-late Feb 2016, a diverse range of sampling techniques were employed to collect specimens and data. Each sampling event was recorded by scientists and technical support staff in a logbook that was kept in the operations room on board the Aurora Australis. This is a direct digital transcription of the paper logbook with interpolated lat/lon from underway data to supplement start times as recorded in the log. The method used to obtain the supplementary position is described in the associated eventlog_matchup.html file. event_number: A unique event identifier in the log, in the order that the events were written down (usually but not always chronologically) event_type: The code defined and used by each research project to identify the types of equipment deployed or samples collected for an event. event_type_prefix: A non-mandatory prefix field used by some research projects to identify the type of an event event_type_number: A sequential number or alphanumeric-number combination defined and used by each research project to identify unique equipment deployment or sample collection events station_number: A universal (voyage-wide) station number used across all projects to identify a nominal lat/lon position defined during voyage planning leg: A nominally straight-line section of the voyage track defined during voyage planning. The voyage track was planned as a series of roughly N-S and E-W transects that intersected in some locations. Legs start at a station and continue through more stations to a vertex-station which is the start of the next leg. Legs are numbered consecutively. waypoint: A GPS waypoint used by Aurora Australis crew, AAD science technical support and researchers to identify target lat/lon positions in the voyage. Some waypoints correspond with station numbers. start_date_utc: The start date of the event in UTC start_time_utc: The start time of the event in UTC start_lat_deg: The latitude (whole degrees) of the vessel at the beginning of the event start_lat_min: The latitude (minutes) of the vessel at the beginning of the event start_lat_dec_deg: The latitude (decimal degrees) of the vessel at the beginning of the event start_lon_deg: The longitude (whole degrees) of the vessel at the beginning of the event start_lon_min: The longitude (minutes) of the vessel at the beginning of the event start_lon_dec_deg: The longitude (decimal degrees) of the vessel at the beginning of the event end_date_utc: The end date of the event in UTC end_time_utc: The end time of the event in UTC end_lat_deg: The latitude (whole degrees) of the vessel at the end of the event end_lat_min: The latitude (minutes) of the vessel at the end of the event end_lat_dec_deg: The latitude (decimal degrees) of the vessel at the end of the event end_lon_deg: The longitude (whole degrees) of the vessel at the end of the event end_lon_min: The longitude (minutes) of the vessel at the end of the event end_lon_dec_deg: The longitude (decimal degrees) of the vessel at the end of the event remarks: Comments/remarks written by researchers when completing the paper log transcribe_comments: Comments/remarks made by the transcriber when the log was digitised utc: The start date and time of the event in UTC start_lon_dec_deg_interp: The latitude (decimal degrees) of the vessel at the beginning of the event interpolated from the vessel underway data start_lat_dec_deg_interp: The longitude (decimal degrees) of the vessel at the beginning of the event interpolated from the vessel underway data The science event log is a record of the date, time, location, event code (assigned by projects) and if relevant the K-Axis station number where every science sampling event occurred. It is a reference point for scientists to disover what types of data were collected at each location during the voyage for collaboration purposes, and a backbone reference log for ecological studies. Interpolated lat/lon for the start time of each event fill gaps where the position was omitted or overlooked by scientists filling in the log.