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Infrasound From the Osiris-Rex Src Re-Entry Observed Near the Nevada-Utah Border

Description: 

The OSIRIS-REx Sample Return Capsule (SRC) re-entered the Earth’s atmosphere on the morning of 24 September 2023. The SRC entered the atmosphere over the Pacific Ocean at a speed of over 43,000 km/hr and a few minutes later landed in Utah. Our team had microbarometers deployed on the ground near the border between Nevada and Utah to detect the infrasound (i.e., sound a frequency below human hearing) waves produced by the OSIRIS-REx SRC re-entry. Most of the sensors were deployed at the Wendover Airport, which was nominally 58 km to the north of the SRC trajectory. Our team deployed 15 sensors at the Wendover Airport, which some were co-located with sensors deployed by the University of Hawaii. Our team deployed three different sensor models (Chaparral Physics, GEM, and WERD) in close proximity to each other. The Chaparral Physics sensors formed a 4-sensor array with an aperture of 112 m. The additional sensors were arranged to form smaller arrays around the Chaparral Physics sensors. In addition, two GEM sensors were deployed between the airport and the SRC trajectory. All the sensors observed an N-wave arrival followed by broadband coherent rumbling after the initial arrival. This presentation will present the details of this deployment as well as preliminary results.

Session: The OSIRIS-REx Sample Return Capsule Re-entry: Geophysical Observations - I

Type: Oral

Date: 5/1/2024

Presentation Time: 05:00 PM (local time)

Presenting Author: Brian

Student Presenter: No

Invited Presentation: 

Authors