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A “Floatilla” of Airborne Seismometers for Venus

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2022GL100978· OSTI ID:1914375
 [1];  [2]
  1. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
  2. Sandia National Laboratories Albuquerque NM USA
Abstract

Barometers floating on high‐altitude balloons in the relatively clement cloud layer on Venus could detect and characterize acoustic waves generated by seismic activity, avoiding the need for high‐temperature electronics required for surface seismology. Garcia et al. (2022, https://doi.org/10.1029/2022GL098844 ) recently demonstrated the detection of low‐frequency sound (infrasound) caused by earthquakes of magnitudes 7.3 and 7.5 from stratospheric balloons nearly 3,000 km away from the epicenter. They provided a preliminary demonstration of earthquake magnitude and location inversion, and the determination of S‐ and Rayleigh wave velocities using only their acoustic signature. Large earthquakes produce low‐frequency seismic waves that penetrate the interiors of planets; their detection at continental‐scale distances from a high‐vantage point demonstrates the feasibility of balloon‐based investigations of Venus' interior. We contextualize these results within the effort to perform seismology on Venus from balloons, discuss its limitations, and share perspectives on open research questions in this area.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NA0003525
OSTI ID:
1914375
Alternate ID(s):
OSTI ID: 1923430
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 2 Vol. 50; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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