Publication:
Off-Earth seismic: Viability and examination of use for measuring geophysical, geomechanical and structural properties of off-Earth bodies

ac.person.orcid 0000-0002-6686-0770
ac.person.orcid 0000-0002-0421-0940
ac.person.position HDR Student
ac.person.position Staff
ac.person.position Staff
dc.contributor.advisor Saydam, Serkan
dc.contributor.advisor Raval, Simit
dc.contributor.author Dello-Iacovo, Michael
dc.date.accessioned 2022-03-31T05:11:22Z
dc.date.available 2022-03-31T05:11:22Z
dc.date.issued 2022
dc.date.submitted 2022-03-29T08:12:43Z
dc.description.abstract Space exploration and technology development present great potential to humanity through the expansion of useful infrastructure such as satellites, space stations, launch facilities and space agencies. In addition, access to scientific opportunities such as understanding the origin of our solar system may prove valuable, and resources ranging from ice to metals and rare earth elements may be utilised to great benefit. The presence of these resources has been demonstrated on the Moon, Mars, comets, and asteroids, while the concentrations remain less certain. The risk of asteroid and comet impacts poses a great threat to life on Earth. To date, little to nothing is known about the interior of most planetary bodies. Seismic techniques are used with great success to understand the subsurface of Earth and have been proposed for expanded use in off-Earth environments, such as on the Moon, Mars, and asteroids to advance the knowledge of their interiors. The goal of this thesis is to examine the potential use of seismic techniques to explore and understand the subsurface of off-Earth environments for the purposes of resource prospecting, mining, and asteroid/comet deflection. This thesis presents a novel and innovative methodology for measuring the seismic properties of regolith and uses it to develop an understanding of the effect of the space environment on seismic data collection, such as the differing atmospheric pressure and regolith properties. The potential use of other remote sensing and geophysical techniques to assist with seismic exploration is also reviewed in addition to mission proposals. A novel testing system was designed for measuring the seismic properties of fine-grain, low compaction regolith, called the Seismic Apparatus for Fine-Grained Sediment (SAFGS). Seismic experiments were performed at UNSW Sydney, Australia and the Jet Propulsion Laboratory (JPL), Pasadena, the USA on two available off-Earth regolith simulants designed based on known off-Earth regolith properties; the Australian lunar Regolith Simulant (ALRS-1) and the Mojave Mars Simulant (MMS). ALRS-1 had a measured P-wave velocity of 98.6 m/s, comparable to the measured in-situ¬ velocity of lunar regolith (104 m/s and 114 m/s). The P-wave velocity of the MMS regolith was measured with a possible relationship between increasing grain size and velocity being found. The MMS dust had a mean velocity of 61.3 m/s, small-grain MMS had 244.5 m/s, and medium-grain MMS had 271.2 m/s. Computational and analytical modelling methods are explored to validate and expand upon the experimental work.
dc.identifier.uri http://hdl.handle.net/1959.4/100200
dc.language English
dc.language.iso en
dc.publisher UNSW, Sydney
dc.rights CC BY 4.0
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject.other Geophysics
dc.subject.other Seismic
dc.subject.other Space science
dc.subject.other Planetary science
dc.subject.other Off-Earth mining
dc.subject.other Asteroid deflection
dc.title Off-Earth seismic: Viability and examination of use for measuring geophysical, geomechanical and structural properties of off-Earth bodies
dc.type Thesis
dcterms.accessRights open access
dcterms.rightsHolder Dello-Iacovo, Michael
dspace.entity.type Publication
unsw.accessRights.uri https://purl.org/coar/access_right/c_abf2
unsw.contributor.advisorExternal Anderson, Robert; Jet Propulsion Laboratory
unsw.date.workflow 2022-03-31
unsw.identifier.doi https://doi.org/10.26190/unsworks/23890
unsw.relation.faculty Engineering
unsw.relation.school School of Minerals and Energy Resources Engineering
unsw.relation.school School of Minerals and Energy Resources Engineering
unsw.relation.school School of Minerals and Energy Resources Engineering
unsw.subject.fieldofresearchcode 40 ENGINEERING
unsw.subject.fieldofresearchcode 37 EARTH SCIENCES
unsw.thesis.degreetype PhD Doctorate
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