Re-evaluation of Apollo 17 Lunar Seismic Profiling Experiment data
dc.contributor.author | Heffels, Alexandra | |
dc.contributor.author | Knapmeyer, Martin | |
dc.contributor.author | Oberst, Jürgen | |
dc.contributor.author | Haase, Isabel | |
dc.date.accessioned | 2019-09-19T08:31:02Z | |
dc.date.available | 2019-09-19T08:31:02Z | |
dc.date.issued | 2016-12-10 | |
dc.description.abstract | We re-analyzed Apollo 17 Lunar Seismic Profiling Experiment (LSPE) data to improve our knowledge of the subsurface structure of this landing site. We use new geometrically accurate 3-D positions of the seismic equipment deployed by the astronauts, which were previously derived using high-resolution images by Lunar Reconnaissance Orbiter (LRO) in combination with Apollo astronaut photography. These include coordinates of six Explosive Packages (EPs) and four geophone stations. Re-identified P-wave arrival times are used to calculate two- and three-layer seismic velocity models. A strong increase of seismic velocity with depth can be confirmed, in particular, we suggest a more drastic increase than previously thought. For the three-layer model the P-wave velocities were calculated to 285, 580, and 1825 m/s for the uppermost, second, and third layer, respectively, with the boundaries between the layers being at 96 and 773 m depth. When compared with results obtained with previously published coordinates, we find (1) a slightly higher velocity (+4%) for the uppermost layer, and (2) lower P-wave velocities for the second and third layers, representing a decrease of 34% and 12% for second and third layer, respectively. Using P-wave arrival time readings of previous studies, we confirm that velocities increase when changing over from old to new coordinates. In the three-layer case, this means using new coordinates alone leads to thinned layers, velocities rise slightly for the uppermost layer and decrease significantly for the layers below. | en |
dc.identifier.eissn | 0032-0633 | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/10053 | |
dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-9044 | |
dc.language.iso | en | |
dc.relation.ispartof | 10.14279/depositonce-18511 | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject.ddc | 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten | de |
dc.subject.other | Apollo 17 | en |
dc.subject.other | seismic data | en |
dc.subject.other | velocity-depth profile | en |
dc.subject.other | Lunar Reconnaissance Orbiter | en |
dc.subject.other | 3-D positions | en |
dc.subject.other | lunar module | en |
dc.title | Re-evaluation of Apollo 17 Lunar Seismic Profiling Experiment data | en |
dc.type | Article | en |
dc.type.version | publishedVersion | en |
dcterms.bibliographicCitation.doi | 10.1016/j.pss.2016.11.007 | |
dcterms.bibliographicCitation.journaltitle | Planetary and space science | en |
dcterms.bibliographicCitation.originalpublishername | Elsevier | en |
dcterms.bibliographicCitation.originalpublisherplace | Kidlington | en |
dcterms.bibliographicCitation.pageend | 54 | |
dcterms.bibliographicCitation.pagestart | 43 | |
dcterms.bibliographicCitation.volume | 135 | |
tub.accessrights.dnb | free | |
tub.affiliation | Fak. 6 Planen Bauen Umwelt::Inst. Geodäsie und Geoinformationstechnik::FG Planetengeodäsie | de |
tub.affiliation.faculty | Fak. 6 Planen Bauen Umwelt | de |
tub.affiliation.group | FG Planetengeodäsie | de |
tub.affiliation.institute | Inst. Geodäsie und Geoinformationstechnik | de |
tub.publisher.universityorinstitution | Technische Universität Berlin | de |
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