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Global Change Master Directory (GCMD)
K-Axis Science Event Log with derived latitude and longitude from underway data
Entry ID: AAS_4344_K-AXIS_Science_Event_Log_UW_LatLon


Summary
Abstract: 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


Purpose: 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.

Related URL
Link: View Related Information
Description: Download point for the event log


Link: View Related Information
Description: Citation reference for this metadata record and dataset.


Link: View Related Information
Description: Public information for AAS project AAS_4344

Parent DIF
This description is a member of a collection. The collection is described in
AAS_4344_K-AXIS_Voyage


Geographic Coverage
 N: -44.729 S: -66.969  E: 144.974  W: 62.4304

Data Set Citation
Dataset Creator: Constable, A., Sumner, M. and Tattersall, K.L.
Dataset Title: K-Axis Science Event Log with derived latitude and longitude from underway data
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2018-05-02
Dataset Publisher: Australian Antarctic Data Centre
Version: 1
Online Resource: https://data.aad.gov.au/metadata/records/AAS_4344_K-AXIS_Science_Ev...


Temporal Coverage
Start Date: 2016-01-11
Stop Date: 2016-02-19


Location Keywords
GEOGRAPHIC REGION > POLAR
OCEAN > INDIAN OCEAN > KERGUELEN ISLANDS
OCEAN > SOUTHERN OCEAN > KERGUELEN PLATEAU
OCEAN > SOUTHERN OCEAN > BANZARE BANK
OCEAN > SOUTHERN OCEAN > PRINCESS ELIZABETH TROUGH
CONTINENT > ANTARCTICA


Data Resolution
Latitude Resolution: 100 Metre(s)
Longitude Resolution: 100 Metre(s)
Temporal Resolution: 1 Minute(s)


Science Keywords
BIOLOGICAL CLASSIFICATION >PROTISTS >PLANKTON    [Definition]
BIOSPHERE >ECOSYSTEMS >AQUATIC ECOSYSTEMS >PLANKTON >ZOOPLANKTON    [Definition]
BIOSPHERE >ECOSYSTEMS >AQUATIC ECOSYSTEMS >PLANKTON >PHYTOPLANKTON    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >FISH    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >FISH >RAY-FINNED FISHES    [Definition]
BIOLOGICAL CLASSIFICATION >PROTISTS    [Definition]
OCEANS >OCEAN CHEMISTRY >STABLE ISOTOPES    [Definition]
OCEANS >SALINITY/DENSITY    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >MAMMALS >CETACEANS >BALEEN WHALES    [Definition]
OCEANS >OCEAN CHEMISTRY    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >BIRDS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >MAMMALS >CARNIVORES >SEALS/SEA LIONS/WALRUSES    [Definition]
OCEANS >OCEAN ACOUSTICS    [Definition]
OCEANS >OCEAN OPTICS >FLUORESCENCE    [Definition]
OCEANS >OCEAN CHEMISTRY >NUTRIENTS    [Definition]
OCEANS >OCEAN CHEMISTRY >OXYGEN    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >EUPHAUSIIDS (KRILL)    [Definition]
OCEANS >OCEAN CHEMISTRY >TRACE ELEMENTS    [Definition]


Platform
R/V AA >R/V Aurora Australis
MOORINGS    [Information]


Instrument
ACOUSTIC SOUNDERS    [Information]
CTD >Conductivity, Temperature, Depth    [Information]
NORPAC ZOOPLANKTON NET    [Information]
CPR >Continuous Plankton Recorder    [Information]
PAM >PORTABLE FLUORESCENCE ANALYZERS    [Information]
HPLC >High-Performance Liquid Chromatograph    [Information]
TRAWL    [Information]
Cameras    [Information]
NISKIN BOTTLES    [Information]
BONGO NETS    [Information]
PLANKTON NETS    [Information]
BINOCULAR >BINOCULAR    [Information]


Quality
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.


Access Constraints
These data are publicly available from the provided URL.


Use Constraints
This information has not been quality controlled or error corrected. Please use the information with caution. We recommend using the quality controlled log when it becomes available.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4344... when using these data.


Keywords
EVENT LOG
K-AXIS
ANTARCTIC GATEWAY PARTNERSHIP


Data Set Progress
COMPLETE


Originating Center
Australian Antarctic Division


Data Center
Australian Antarctic Data Centre, Australia    [Information]
Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


Personnel
ANDREW CONSTABLE
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: +61 3 6232 3558
Email: andrew.constable at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


MICHAEL SUMNER
Role: TECHNICAL CONTACT
Phone: (03) 6232 3155
Email: Michael.Sumner at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


KATHERINE LESLEY TATTERSALL
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: katherine.tattersall at utas.edu.au
Province or State: Tasmania
Country: Australia


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2016-09-07
Last DIF Revision Date: 2019-04-03



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