Aerial Seismology Using Balloon-Based Barometers
Résumé
Seismology on Venus has long eluded planetary
scientists due to extreme temperature and pressure conditions
on its surface, which most electronics cannot withstand for
mission durations required for ground-based seismic studies.
We show that infrasonic (low-frequency) pressure fluctuations,
generated as a result of ground motion, produced by an artificial
seismic source known as a seismic hammer, and recorded
using sensitive microbarometers deployed on a tethered balloon,
are able to replicate the frequency content of ground motion.
We also show that weak, artificial seismic activity thus produced
may be geolocated by using multiple airborne barometers. The
success of this technique paves the way for balloon-based aero-
seismology, leading to a potentially revolutionary method to
perform seismic studies from a remote airborne station on the
earth and solar system objects with substantial atmospheres such
as Venus and Titan.
Domaines
Autre
Origine : Fichiers produits par l'(les) auteur(s)
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