Korea Polar Data Center
Scientific observations and results from Antarctica shall
be exchanged and made freely available
be exchanged and made freely available
2017-2026 infrasound transient catalog
This is a **data product**; the scientific interpretation of the source families (marine air-gun survey contamination, a located glacial source at David Glacier, ocean/sea-ice and wind sources) is reported in the companion analysis paper (see *Related publications*).
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- Entry ID
- KOPRI-KPDC-00003159
- Copyright
- ISO Topic
- Environment
- Geoscientific Information
- Personnel
- Yongcheol Park (ypark@kopri.re.kr)
- Won Sang Lee (wonsang@kopri.re.kr)
- JinHoon Jung (jhjung87@kopri.re.kr)
- Research period
- 2017-01-01 ~ 2026-01-07
- Create/Update Date
- 2026-07-23 / 2026-09-14
- Location
- GEOGRAPHIC REGION > POLAR > Terra Nova Bay, Antarctica
- Citation
- The data(KOPRI-KPDC-00003159) used in this work was provided by the Korea Polar Research Institute.
- Spatial Coverage
-
POINT
- lat:-74.617950, lon:164.219250
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- Raw Data
- File Size 3.84 Mb for 5 items
| Category | File Name | Description | Size | Status |
|---|---|---|---|---|
| Result | KIS_infrasound_transient_catalog_2017-2026_v1.csv | ## Files | File | Description | |---|---| | `KIS_infrasound_transient_catalog_2017-2026_v1.csv` | The catalog, 22,750 rows | | `KIS_array_stations.csv` | Element coordinates and array center | | `README.md` | This document | ## Column definitions (catalog CSV) | Column | Unit | Type | Description | |---|---|---|---| | `event_id` | — | string | Unique identifier, `KIS` + zero-padded sequence in time order | | `datetime_utc` | UTC | ISO 8601 | Detection time (transient onset) at the KIS array | | `year` | — | integer | Calendar year (UTC) | | `julday` | — | integer | Day of year, 001–366 (UTC) | | `duration_s` | s | float | Transient duration | | `coherence` | — | float (0–1) | Inter-element normalized cross-correlation coherence | | `back_azimuth_deg` | ° | float | Wavefront back-azimuth (0° = N, clockwise), 0–360 | | `app_velocity_ms` | m s⁻¹ | float | Apparent (trace) velocity across the array | | `snr` | — | float | Signal-to-noise ratio at detection | | `peak_pressure_Pa` | Pa | float | Peak **acoustic pressure perturbation** amplitude (see note) | | `sector` | — | string | Directional sector (see below) | **Note on `peak_pressure_Pa`.** This is the peak absolute amplitude of the **acoustic pressure perturbation** (the fluctuation about ambient pressure that infrasound measures, **not** absolute barometric pressure), on element KIS1, after band-pass filtering to the flat-response band 0.5–8 Hz, converted from counts with the manufacturer sensitivity 8.0 × 10⁵ counts Pa⁻¹. The unit is physical (Pa), so both relative comparison between events and physical-amplitude use are possible, **but the absolute calibration rests on the nominal manufacturer sensitivity and has not been independently verified** against a reference barometer (see *Quality control*). A blank value means the element waveform was unavailable for that event. Observed values span roughly 0.001–0.5 Pa (median ≈ 0.017 Pa); the loudest sector is ESE (air-gun shots) and the weakest is the wind-driven W-NW sector. | 1.72 Mb | Download |
| Result | KIS_infrasound_transient_catalog_2017-2026_v2.2.csv | A decade-scale catalog of 23,768 coherent atmospheric infrasound transients detected by the three-element KIS (KOPRI InfraSound) array at Jang Bogo Station, Terra Nova Bay, East Antarctica, over 2,507 array-days from 2017 to 2026 (22,711 events from the 100 Hz HDF stream and 1,057 from the 20 Hz BDF stream). Transients were detected with an STA/LTA coincidence trigger in the 0.5–8 Hz band and retained when the inter-element coherence was ≥ 0.6 and the apparent velocity was 250–500 m s⁻¹. Each entry gives the detection time, duration, inter-element coherence, back-azimuth, apparent velocity, signal-to-noise ratio, nominal-equivalent peak pressure, per-event back-azimuth and apparent-velocity uncertainties, directional sector, and recording stream. Version 2.2 adds the two uncertainty columns; version 2.1 removed 39 spurious detections from two corrupt-data days in February 2019. The same catalog, together with per-event waveform windows, is available at Zenodo (https://doi.org/10.5281/zenodo.21882394). The dataset is described in an Earth System Science Data paper, and the source interpretation is given in a companion paper in The Cryosphere. | 2.1 Mb | Download |
| Result | README_KPDC_v2.2.md | v2.2 readme file | 11.62 Kb | Download |
| Etc | KIS_array_stations.csv | Station information and Catalog description | 183 Bytes | Download |
| Etc | README.md | KIS coherent infrasound transient catalog, Terra Nova Bay, East Antarctica (2017–2026) | 8.01 Kb | Download |