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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.


GET DATA: https://space.physics.otago.ac.nz/aarddvark/

Simple

Date (Creation)
2023-08-11T22:00:35
Date (Publication)
2023-08-11T22:00:35

Citation identifier

No information provided.
Point of contact
Organisation name Individual name Electronic mail address Role

Rodger, C.

craig.rodger@otago.ac.nz

Author

AARDDVARK

craig.rodger@otago.ac.nz

Publisher
Maintenance and update frequency
As needed
Date of next update
2023-08-11T22:00:42
Keywords
  • INSTALLATION

  • K060A

GCMD Earth Science and Earth Science Services Keywords
  • ION CHEMISTRY/IONIZATION

  • SOLAR FLARES

  • ENERGY DEPOSITION

  • MAGNETIC STORMS

GCMD Platform/Sources Keywords
  • GROUND STATIONS

GCMD Instrument/Sensors Keywords
  • VLF RECEIVERS

GCMD Project Keywords
  • AARDDVARK

GCMD Locations Keywords
  • ANTARCTICA

  • ROSS ISLAND

Use limitation

This data set conforms to the CC BY Attribution License ( https://creativecommons.org/licenses/by/4.0/ )

Hierarchy level
Dataset
Date
Statement

Creative Commons Attribution 4

gmd:disseminationConstraints
License
Access constraints
License
Use constraints
License
Language
English
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere

Extent

N
S
E
W
thumbnail


thumbnail

Begin date
2008-12-15T00:00:00
Supplemental Information

Any additional comments about this dataset

Distribution format
Name Version

Metadata

File identifier
56ce3306-a8c9-4439-88df-21e891c389e6 XML
Metadata language
English
Character set
anyValidURI
Hierarchy level
Dataset
Date stamp
2024-07-16T05:46:33.519Z
Metadata standard name

ISO 19115

Metadata standard version

2003

Metadata author
Organisation name Individual name Electronic mail address Role

AARDDVARK

craig.rodger@otago.ac.nz

Point of contact
 
 

Overviews

overview

Spatial extent

thumbnail

Keywords

GCMD Earth Science and Earth Science Services Keywords
ENERGY DEPOSITION ION CHEMISTRY/IONIZATION MAGNETIC STORMS SOLAR FLARES
GCMD Instrument/Sensors Keywords
VLF RECEIVERS
GCMD Platform/Sources Keywords
GROUND STATIONS
GCMD Project Keywords
AARDDVARK

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