Lateral variations in bulk density and porosit of the upper lunar crust from high-resolution gravity and topography data: Comparison of different analysis techniques

dc.contributor.authorWahl, Daniel
dc.contributor.authorOberst, Jürgen
dc.date.accessioned2021-04-07T08:27:06Z
dc.date.available2021-04-07T08:27:06Z
dc.date.issued2019-05-29
dc.description.abstractWe map lateral variations in bulk density of the upper lunar highland crust using the most recent GRAIL gravity field solution of degree and order 1500 in combination with LOLA topography data, both truncated to an upper limit of degree and order 700. Our maps have a spatial resolution of 0.75°, where each grid point was calculated using circular analysis regions of 3° radius. We apply two methods, which yield similar results for most parts of the study area. The first method minimizes the correlation between topography and Bouguer anomalies, the second maximizes the smoothness of the Bouguer anomalies. Both approaches suffer in the case that terrain is flat and lacks topographic features; consequently, this is where results from the two methods differ. We also mapped porosity of the crust using grain densities derived from Lunar Prospector spectrometry and sample analysis. It appears that variations in bulk density are mostly related to differences in crustal porosity. We find that high porosity is often associated with areas of impact basins. This confirms earlier studies, that impacts changed the geophysical characteristics of the lithosphere sustainably and that the high porosity of the upper lunar crust is most likely impact induced.en
dc.description.sponsorshipDFG, 437101389, Multikollektor-ICP-Massenspektrometeren
dc.identifier.eissn2194-9050
dc.identifier.issn2194-9042
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/12939
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-11740
dc.language.isoenen
dc.relation.ispartof10.14279/depositonce-11426
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc550 Geowissenschaftende
dc.subject.othergravity fielden
dc.subject.otherBouguer anomaliesen
dc.subject.othercorrelation analysisen
dc.subject.otherGRAILen
dc.subject.otherLOLAen
dc.titleLateral variations in bulk density and porosit of the upper lunar crust from high-resolution gravity and topography data: Comparison of different analysis techniquesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.5194/isprs-annals-IV-2-W5-527-2019en
dcterms.bibliographicCitation.journaltitleISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciencesen
dcterms.bibliographicCitation.originalpublishernameCopernicusen
dcterms.bibliographicCitation.originalpublisherplaceKatlenburg-Lindauen
dcterms.bibliographicCitation.pageend532en
dcterms.bibliographicCitation.pagestart527en
dcterms.bibliographicCitation.volumeIV-2/W5en
tub.accessrights.dnbfreeen
tub.affiliationFak. 6 Planen Bauen Umwelt>Inst. Geodäsie und Geoinformationstechnik>FG Planetengeodäsiede
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Planetengeodäsiede
tub.affiliation.instituteInst. Geodäsie und Geoinformationstechnikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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