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Very low frequency subionospheric communication transmitter observations (WWLLN)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Very low frequency subionospheric communication transmitter observations (WWLLN)
Description:
Abstract:
The AARDDVARK/WWLLN Very Low Frequency (VLF) Radio Sensor was installed at Arrival Heights from 10-15 December 2008 by Dr Craig J. Rodger and Dr. James Brundell as part of Antarctica New Zealand Event K069a. The sensor measures the magnetic field in the Very Low Frequency radio range (~500 Hz-50 kHz), and passes it to a PC which processes the data for the experiments. The primary experiment is the AARDDVARK observations, which measures powerful and distant communications transmitters operating in the VLF range. As such, the dataset is "narrowband", taking amplitude and phase measurements at the transmission frequencies. For this sensor, there is 0.2s time resolution. The Konsortia sensors detect changes in ionisation levels from ~30-85 km altitude, with the goal of increasing the understanding of energy coupling between the Earth's atmosphere, Sun, and Space. We use the upper atmosphere as a gigantic energetic particle detector to observe and understand changing energy flows; this Science area impacts our knowledge of global change, communications, and navigation. One of the few experimental techniques that can probe these altitudes uses very low-frequency (VLF) electromagnetic radiation, trapped between the lower ionosphere (~85 km) and the Earth, and thus said to be propagating "subionospherically". The sensor is currently logging transmitters in the northern & southern hemispheres, over a very wide longitude range. Both experiments send the processed data across the internet. AARDDVARK observations are sent to the University of Otago once a day at an agreed time. The new AH receiver is the 10th station in the AARDDVARK network, jointly lead by the University of Otago and the British Antarctic Survey.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20081216
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 114.1639
East_Bounding_Coordinate: -67.2817
North_Bounding_Coordinate: 48.2042
South_Bounding_Coordinate: -77.85
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ENERGETIC PARTICLE PROPERTIES > ENERGY DEPOSITION
Theme_Keyword: EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR FLARES
Theme_Keyword: EARTH SCIENCE > SUN-EARTH INTERACTIONS > IONOSPHERE/MAGNETOSPHERE DYNAMICS > ION CHEMISTRY/IONIZATION
Theme_Keyword: EARTH SCIENCE > SUN-EARTH INTERACTIONS > IONOSPHERE/MAGNETOSPHERE DYNAMICS > MAGNETIC STORMS
Theme_Keyword: GROUND STATIONS
Theme_Keyword: VLF RECEIVERS
Theme_Keyword: AARDDVARK > ANTARCTIC-ARCTIC RADIATION-BELT (DYNAMIC) DEPOSITION - VLF ATMOSPHERIC RESEARCH KONSORTIUM
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: UTILITIES/COMMUNICATIONS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: CONTINENT > ANTARCTICA > ARRIVAL HEIGHTS
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CRAIG RODGERS
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Department of Physics
Address: University of Otago
Address: PO BOX 56
City: Dunedin
Country: New Zealand
Contact_Voice_Telephone: +64 03 479 4120
Contact_Facsimile_Telephone: +64 03 479 0964
Contact_Electronic_Mail_Address: crodger@physics.otago.ac.nz
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Observations are sent to the University of Otago once a day at an agreed time (currently, 1am NZST) Each participating institute collects and holds its own AARDDVARK data in the form of observations and logs, etc. AARDDVARK members can request selected data periods for scientific study from one another. The exchange of AARDDVARK data between members of the Konsortia is undertaken with the goal of specific scientific projects. Data exchange is undertaken with the clear understanding that there will be co-authorship and consultation as to any publications making use of each member's data. Non-Konsortia members interested in AARDDVARK observations should communicate in the first instance with the AARDDVARK Principal Investigators (Clilverd and Rodger), who can identify which sensors are best suited for your requirements. All interpretation of AARDDVARK data should be undertaken by Konsortia members, who are experts in the understanding of these observations.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K060_2008_2012_NZ_1
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://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.physics.otago.ac.nz/space/AARDDVARK_hom...
Access_Instructions:
Antarctic-Arctic Radiation-belt (Dynamic) Deposition - VLF Atmospheric Research Konsortium (AARDDVARK) Homepage
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20090318
Metadata_Review_Date: 20120615
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CEISHA POIROT
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: c.poirot@antarcticanz.govt.nz
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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