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Data underlying the publication: Long-term infrasonic monitoring of land and marine-terminating glaciers in Greenland

dataset
posted on 01.04.2022, 09:51 by Läslo EversLäslo Evers
Number of infrasonic detections per day for 2004-2021 for four glaciers surrounding Qaanaaq (Greenland). The observations, data processing and interpretation are described in Evers et al., Geophysical Research Letters, 2022.
A period of 18 years of infrasonic recordings was analyzed from a microbarometer array (I18DK) in northwestern Greenland, near Qaanaaq. A huge number of infrasonic detections, over 700,000, have been made in I18DKs soundscape during the Arctic summers. Simultaneously identified were both calving events from marine-terminating glaciers and discharge related acoustics from a land-terminating glacier. This infrasonic activity is correlated to sea-surface and atmospheric temperature, respectively. Inter-yearly to daily variations were retrieved showing a strong variability in infrasonic detection rates and hence glacier activity. The highest number of infrasonic detections were found in recent years from the land-terminating glacier. The latter is supported by actual discharge measurements and partly by a discharge model. It is concluded that monitoring infrasound from glaciers can complement other techniques to remotely and passively get insights into glacier dynamics with high temporal and spatial resolution.

Funding

VIDI project from the Netherlands Organization for Scientific Research (NWO), project 864.14.005

Probing the changing deep oceans and upper atmosphere with seismo-acoustic waves

Netherlands Organisation for Scientific Research

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History

Publisher

4TU.ResearchData

Time coverage

2004-2021

Geolocation

Qaanaaq (Greenland)

Geolocation Longitude

-69.28776

Geolocation Latitude

77.47556

Format

ASCII txt file

Organizations

Royal Netherlands Meteorological Institute (KNMI) TU Delft, Faculty of Civil Engineering and Geosiences, Department of Geoscience & Engineering

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