Nella Dan: AAMBER Cruise - Oceanography data

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Unknown

Publication_Date: Unknown

Title: Nella Dan: AAMBER Cruise - Oceanography data

Description:

Abstract:

This dataset contains CTD (conductivity, temperature, depth) data obtained from the Australian Antarctic Marine Biological Ecosystem Research (AAMBER) 86/87 cruise of the Nella Dan, during Feb - Apr 1987. This cruise is the last out of a series of six, conducting a long term field survey on krill, fish and zooplankton. 94 CTD casts were taken in the Prydz Bay region, as a supplement to the krill and fish research program. Casts were made to the bottom over the continental shelf, and to either 200 m or 1000 m off the shelf. This dataset is a subset of the whole cruise data. The fields in this dataset are: Pressure Temperature Sigma-T Salinity Geopotential ANomaly Specific volume Anomaly samples deviation conduction

Purpose:

Not Available

Supplemental_Information:

Not Available

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19870215

Ending_Date: 19870323

Currentness_Reference:Unknown

Status:

Progress: In Work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 60.0

East_Bounding_Coordinate: 92.0

North_Bounding_Coordinate: -60.0

South_Bounding_Coordinate: -70.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > RAIN

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION

Theme_Keyword: EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH

Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE

Theme_Keyword: Conduction

Theme_Keyword: Deviation

Theme_Keyword: Geopotential Anomaly

Theme_Keyword: Marine

Theme_Keyword: Oceanography

Theme_Keyword: Pressure

Theme_Keyword: Salinity

Theme_Keyword: Samples

Theme_Keyword: Sigma-t

Theme_Keyword: Specific Volume Anomaly

Theme_Keyword: Temperature

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ELEVATION

Theme_Keyword: OCEANS

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: OCEAN > SOUTHERN OCEAN

Place_Keyword: GEOGRAPHIC REGION > POLAR

Access_Constraints: Data stored on magnetic optical disk. Summary results in documentation. Data are available via ftp.

Use_Constraints:

This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/). Must be cited properly

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: JONO REEVE

Contact_Position: INVESTIGATOR

Contact_Position: TECHNICAL CONTACT

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 203 Channel Highway

Address: Australian Antarctic Division

City: Kingston

State_or_Province: Tasmania

Postal_Code: 7050

Country: Australia

Contact_Voice_Telephone: +61 3 6232 3106

Contact_Electronic_Mail_Address: jono.reeve@aad.gov.au

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Some problems were experienced with the conductivity cell freezing, and after March 3rd, 1987 only temperature profiles could be taken. Oceanography measurements were taken where possible, which was not always at ideal locations. Therefore coverage of the area is not necessarily complete. This cruise is however part of a series of 6 cruises which operated in this area, providing data from varying seasons and condition. Data collection: A Neil Brown Mark III CTD (conductivity, temperature, depth probe #1103) system attached to a rosette water sampler (General Oceanics) was used for collecting continuous vertical profiles of conductivity and temperature. Water samples were collected at different depths using the rosette water sampler with 5L Niskin bottles. Measurements were made on the downcast, and water samples collected on the upcast. The water sampling depths were determined depending on the readings made during the downcast. The CTD was lowered at a rate as close to 1 m/sec, and raised between samples at speeds between 1 and 2 m/sec. Conductivity and temperature readings were also made at each water sampling station. 94 CTD stations were taken. Ship-board processing: Water samples were analysed on board the ship for salinity and oxygen. Post-ship processing: Oceanography data - Data was initially recorded on audio cassettes, but later replayed to produce digital nine-track magnetic tapes by a PDP 11/23. Data tapes were then processed on a VAX 11/750. For each CTD downcast, an uncalibrated, despiked file was generated, using a recursive filter to compensate for sensor mismatch. The data files were used to generate 2 dbar averages for in situ temperature, salinity, sigma-t, specific volumne anomaly and geopotential anomaly. The averages were centred on even, integral depths, and were only calculated when averages contained eight or more valid data points. The temperature and conductivity means were calculated for the interval, and the salinity calculated for the mid point of the pressure interval from the temperature and salinity means. Data processing software was supplied by CSIRO Division of Oceanography. The complete dataset is logically consistent, as krill and zooplankton hauls and phytoplankton pigment analysis were also obtained at the same sampling sites as the oceanographic and nutrient data. The cruise track was established before the experiment in order to eliminate bias. The oceanographic sampling was done as a supplement to the krill research program, so sampling location and depth were not necessarily selected according to oceanographic related considerations.

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: AU/AADC > Australian Antarctic Data Centre, Australia

Contact_Person: DATA OFFICER AADC

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Australian Antarctic Division

Address: 203 Channel Highway

City: Kingston

State_or_Province: Tasmania

Postal_Code: 7050

Country: Australia

Contact_Voice_Telephone: +61 3 6232 3244

Contact_Facsimile_Telephone: +61 3 6232 3351

Contact_Electronic_Mail_Address: metadata@aad.gov.au

Resource_Description: AAMBER_ocean

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Not Available

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://data.aad.gov.au

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://data.aad.gov.au/aadc/portal/download_file.c...

Access_Instructions:

Download page for Australian Antarctic Data Centre

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://data.aad.gov.au/aadc/marine_science/underwa...

Access_Instructions:

Marine Science Data Search

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://data.aad.gov.au/aadc/metadata/citation.cfm?...

Access_Instructions:

Citation reference for this metadata record and dataset

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 19991007

Metadata_Review_Date: 20090814

Metadata_Future_Review_Date: 20001007

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: JONO REEVE

Contact_Position: INVESTIGATOR

Contact_Position: TECHNICAL CONTACT

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 203 Channel Highway

Address: Australian Antarctic Division

City: Kingston

State_or_Province: Tasmania

Postal_Code: 7050

Country: Australia

Contact_Voice_Telephone: +61 3 6232 3106

Contact_Electronic_Mail_Address: jono.reeve@aad.gov.au

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time