Very Low Frequency Subionospheric Communication Transmitter Observations at Arrival Heights
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 was the 10th station in the AARDDVARK network, jointly lead by the University of Otago and the British Antarctic Survey.
Two near-orthogonal magnetic field loops measuring VLF electromagnetic waves. The centre of the antenna is at 77° 49.790' S, 166° 39.438' E, based on a GPS measurement with 1 m accuracy. Logging is undertaken with UltraMSK software running on a PC locked to GPS timing.
Simple
Identification info
- Date (Creation)
- 2023-08-11T22:00:35
- Date (Publication)
- 2023-08-11T22:00:35
- Presentation form
- Status
- Point of contact - Custodian, Owner, etc
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Role Organisation Individual Electronic mail address Author Rodger, C. craig.rodger@otago.ac.nz Publisher AARDDVARK craig.rodger@otago.ac.nz
- Spatial representation type
- Topic category
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- Climatology, meteorology, atmosphere
Extent
Temporal extent
- Time period
- 2008-12-15T00:00:00
- Maintenance and update frequency
- As needed
- Date
- 2023-08-11T22:00:42
- Date type
- Last Update
- Keywords
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- INSTALLATION
- K060A
- GCMD Earth Science and Earth Science Services Keywords
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- ION CHEMISTRY/IONIZATION
- SOLAR FLARES
- ENERGY DEPOSITION
- MAGNETIC STORMS
- GCMD Platform/Sources Keywords
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- GROUND STATIONS
- GCMD Instrument/Sensors Keywords
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- VLF RECEIVERS
- GCMD Project Keywords
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- AARDDVARK
- GCMD Locations Keywords
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- ANTARCTICA
- ROSS ISLAND
- Resource constraints
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Legal constraints Access constraints Use constraints Constraint application scope This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) License License Dataset
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Any additional comments about this dataset
Distribution Information
- Distribution format
-
- Metadata constraints
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Legal constraints Access constraints Use constraints Constraint application scope This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Licence Unrestricted License Metadata
Metadata
- Metadata identifier
- urn:uuid/56ce3306-a8c9-4439-88df-21e891c389e6
- Language
- English
- Character encoding
- anyValidURI
- Metadata Contact
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Role Organisation Individual Electronic mail address Point of contact AARDDVARK craig.rodger@otago.ac.nz
Type of resource
- Resource scope
- Dataset
- Metadata linkage
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Name Linkage (URL) Protocol Function Description https://space.physics.otago.ac.nz/aarddvark/ Complete Metadata
- Date info (Revision)
- 2024-07-16T05:46:33.519Z
- Date info (Creation)
- 2023-08-11T09:59:36
Metadata standard
- Format name
- ISO 19115-1
- Edition
- 2018