56ce3306-a8c9-4439-88df-21e891c389e6 urn:uuid AARDDVARK craig.rodger@otago.ac.nz 2024-07-16T05:46:33.519Z 2023-08-11T09:59:36 ISO 19115-1 2018 https://space.physics.otago.ac.nz/aarddvark/ Very Low Frequency Subionospheric Communication Transmitter Observations at Arrival Heights 2023-08-11T22:00:35 2023-08-11T22:00:35 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/ Rodger, C. craig.rodger@otago.ac.nz ORCid AARDDVARK craig.rodger@otago.ac.nz climatologyMeteorologyAtmosphere 166.4803 166.9044 -77.8737 -77.8027 -77.82983 166.6573 2008-12-15T00:00:00 2023-08-11T22:00:42 https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/56ce3306-a8c9-4439-88df-21e891c389e6/attachments/K060.jpg INSTALLATION K060A ION CHEMISTRY/IONIZATION SOLAR FLARES ENERGY DEPOSITION MAGNETIC STORMS GCMD Earth Science and Earth Science Services Keywords 2024-02-14 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_16-3-2023-06-09(1) GCMD Earth Science and Earth Science Services Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords sciencekeywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords GROUND STATIONS GCMD Platform/Sources Keywords 2024-02-14 geonetwork.thesaurus.external.platform.ardc-curated_gcmd-platforms_16-3-2023-06-15 GCMD Platform/Sources Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms platforms https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms VLF RECEIVERS GCMD Instrument/Sensors Keywords 2024-02-14 geonetwork.thesaurus.external.instrument.ardc-curated_gcmd-instruments_16-3-2023-06-16(1) GCMD Instrument/Sensors Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments instruments https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments AARDDVARK GCMD Project Keywords 2024-02-14 geonetwork.thesaurus.external.project.ardc-curated_gcmd-projects_16-3-2023-06-15(1) GCMD Project Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects projects https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects ANTARCTICA ROSS ISLAND GCMD Locations Keywords 2024-02-14 geonetwork.thesaurus.external.place.ardc-curated_gcmd-locations_16-3-2023-06-09 GCMD Locations Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations locations https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4 Any additional comments about this dataset This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4