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Probing Venus Surface Iron Contents with Six‐Band VNIR Spectroscopy from Orbit

Dyar, Melinda and Helbert, Jörn and Maturilli, Alessandro and Müller, Nils and Kappel, David (2020) Probing Venus Surface Iron Contents with Six‐Band VNIR Spectroscopy from Orbit. Geophysical Research Letters, 47 (23). Wiley. doi: 10.1029/2020gl090497. ISSN 0094-8276.

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Official URL: http://dx.doi.org/10.1029/2020GL090497


Machine learning models enable interpretation of orbital spectral measurements of Venus using laboratory calibration data collected at Venus surface temperatures. Partial least squares models show that total iron content can be accurately predicted using data from the six bands (two in the 1.02 μm window). Prediction errors on total wt% FeO are ±0.50 for common subalkaline volcanic rocks. Accuracy is ±0.42 for wt% FeO in alkaline rocks, and ±2.47 for all 18 igneous samples studied to date. These robust capabilities will allow discrimination of basalt versus rhyolite/granite and elucidate the rock type of the enigmatic tessera terrain on Venus.

Item URL in elib:https://elib.dlr.de/138723/
Document Type:Article
Title:Probing Venus Surface Iron Contents with Six‐Band VNIR Spectroscopy from Orbit
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dyar, MelindaPlanetary Science Institute, Tucson, AZ, USAUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.dehttps://orcid.org/0000-0003-4613-9799
Müller, NilsNils.Mueller (at) dlr.deUNSPECIFIED
Kappel, DavidDavid.Kappel (at) dlr.deUNSPECIFIED
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1029/2020gl090497
Keywords:Venus, Spektroskopie, Geochemie, Mineralogie
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Venus Emissivity Mapper
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Institute of Planetary Research > Planetary Physics
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:03 Dec 2020 15:12
Last Modified:03 Dec 2020 15:12

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