Data · collection · 2021
Autonomous phase sensitive radar (ApRES) on Amery Ice Shelf 2015-2018
Listed in NASA Earthdata CMR
Raw data from two autonomous phase sensitive radar (ApRES) installations on Amery Ice Shelf, East Antarctica.
Description
Site, Lat, Lon, Installation, Retrieval AM06_borehole, -70.228432, 71.391693, 17-Jan-2015, 03-Feb-2018 AM06_downstream, -70.225635, 71.395988, 09-Mar-2015, 03-Feb-2018 ApRES phase-sensitive radar is a low-power, light-weight instrument developed in a collaboration between BAS and University College London. It is a 200-400 MHz FMCW radar, with a 1-second chirp, run by controller.
Each radar was set to produce a burst of 50 chirps every 4 hrs, and a config file with radar settings is provided with each dataset. Files: *.dat - binary files containing raw data config.ini - config file containing all radar settings used for each site Software for processing the raw data can be obtained from Dr. Keith Nicholls, British Antarctic Survey.
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Limited Matlab scripts are provided here to open the raw data. Command: f=fmcw_load('filename.DAT') Data structure: Variable name Unit Description Nattenuators - Number of attenuation settings used (1 or 2) Attenuator_1 dB RF Attenuator value 1 Attenuator_2 dB RF Attenuator value 2 ChirpsInBurst - Number of chirps in burst TimeStamp day Time of first chirp (Matlab date format) Temperature_1 C Instrument temperature 1 Temperature_2 C Instrument temperature 2 BatteryVoltage V Battery voltage Burst - Number of burst in file FileFormat - Identifies file format from different equipment versions vif V Voltage chirpTime day Time of chirp (Matlab date format) filename - Filename SamplesPerChirp - Number of samples per chirp fs Hz Sampling frequency f0 Hz Start frequency K rad/s/s Chirp gradient (200MHz/s) f1 Hz Stop frequency B Hz Bandwidth fc Hz Centre frequency er - Material permittivity ci m/s Velocity in material lambdac m Centre wavelength t s Sampling time (relative to first sample) f Hz Frequency stamp for sample
Links
Get the data
- Download the dataset. data.aad.gov.au/eds/5205/download ↗
download · from NASA CMR
Where it is published
- DOI doi.org/10.26179/6bnh-mk25 ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=AAS_4096_AM06_ApRES ↗
Citation reference for this metadata record and dataset.
documentation · from NASA CMR
- Public information for AAS project AAS_4096 secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=AAS… ↗
project · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2102891848-AU_AADC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2102891848-AU_AADC.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2102891848-AU_AADC | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:fmcwr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:radar-echo-sounders | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glacier-thickness-ice-sheet-thickness | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/glaciers-ice-sheets/glacier-thickness-ice-sheet-thickness | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |