Global reference histograms of the IMS infrasound broadband detection lists

This data set builds upon the broadband detection lists of the International Monitoring System (IMS)’s infrasound stations. The infrasound data of these stations are regularly (re-)processed at the German National Data Centre at BGR (e.g., Ceranna et al., 2019; https://doi.org/10.1007/978-3-319-75140-5_13 ) using the Progressive Multi-Channel Correlation (PMCC) array processing method (Cansi, 1995; https://doi.org/10.1029/95GL00468). The latest reprocessing with 26 one-third octave spaced frequency bands in the IMS band of interest (0.01 to 4 Hz) included all 53 stations that were certified within the period 2003 to 2020. Based on the resulting broadband detection lists, this data set expands on former analyses of the coherent ambient noise. For each station with a data availability of at least one year (by the end of 2020), monthly reference histograms for the detection parameters back azimuth, apparent speed, and root-mean-squared amplitude are provided. The histograms provide a means to determine the deviation from nominal monthly behaviour and thus enable assessing the plausibility of detections and potential anomalies – without determining their cause – in the detected parameters. Overall, these quality metrics will be, among other applications, a useful supplement to the open-access IMS infrasound data products provided by Hupe et al., which are also available in BGR’s product centre. Further details of the reference histograms are described in the following publication by Kristoffersen et al.: "Updated global reference models of broadband coherent infrasound signals for atmospheric studies and civilian applications" (https://doi.org/10.1029/2022EA002222).

Citation proposal
(2022) . Global reference histograms of the IMS infrasound broadband detection lists. https://gdk.gdi-de.org/geonetwork/srv/api/records/88a4b405-6d4d-4b9e-a836-4c0f8971c827

INSPIRE
SDS

INSPIRE

Identification

File identifier: 88a4b405-6d4d-4b9e-a836-4c0f8971c827 XML

Hierarchy level: Dataset

Online resource

Resource identifier

code: bcaf7157-5fe7-f3a3-6391-91c5ea43d807

code: https://doi.org/10.25928/bgrseis_hist-ifsd

Metadata language: English

Spatial representation type: Text, table

Encoding

Format: netCDF

Version: n/a

Projection

Classification of data and services

Topic category

Geoscientific information

Classification of data and services

Coupled resource

Classification of data and services

Coupled resource

Keywords

Other keywords

Keywords ( Theme )

infrasound
International Monitoring System
IMS
CTBT
noise
spectral models
atmosphere
geophysics
Infraschall
Kernwaffenteststopp
opendata

Geographic coverage

Temporal reference

Temporal extent

Date ( Publication ): 2022-01-07

Quality and validity

Lineage: As the German National Data Centre for the CTBT, BGR archives waveform data of IMS infrasound arrays and produces infrasound broadband detection lists using the Progressive Multi-Channel Correlation (PMCC) algorithm. The histograms are derived from the detection lists as described in the paper by Kristoffersen et al. The data quality depends on the station performance and can be temporarily reduced, e.g. due to failures of the instruments or power outage. These histogram data products enable assessing the plausibility of detections in terms of back azimuth, velocity and amplitude and identifying anomalies in the detected parameters.

Conformity

Restrictions on access and use

Access constraints: Licence: CC BY 4.0; in the event of further use, both the data product source and the accompanying open-access publication (Kristoffersen et al., 2022; doi: 10.1029/2022EA002222) should be cited. Lizenz: CC BY 4.0; bei Weiterverwendung sind sowohl die Datenproduktquelle als auch die zugehörige open-access Publikation (Kristoffersen et al., 2022; doi: 10.1029/2022EA002222) zu zitieren.

Access constraints: {"id": "cc-by/4.0", "name": "Creative Commons Namensnennung - 4.0 International", "url": "https://creativecommons.org/licenses/by/4.0/", "quelle": "Infrasound_PMCC_reference © BGR, Hannover, 2021, doi: 10.25928/bgrseis_hist-ifsd"}