Cargando…
Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data
In situ information on the surface composition of Venus is based on measurements of a small number of landing sites. In the laboratory, we measured the emissivity of a range of igneous rocks at temperatures up to 480°C. We show that high-temperature laboratory spectra of basalts are consistent with...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7810366/ https://www.ncbi.nlm.nih.gov/pubmed/33523894 http://dx.doi.org/10.1126/sciadv.aba9428 |
_version_ | 1783637298128093184 |
---|---|
author | Helbert, J. Maturilli, A. Dyar, M. D. Alemanno, G. |
author_facet | Helbert, J. Maturilli, A. Dyar, M. D. Alemanno, G. |
author_sort | Helbert, J. |
collection | PubMed |
description | In situ information on the surface composition of Venus is based on measurements of a small number of landing sites. In the laboratory, we measured the emissivity of a range of igneous rocks at temperatures up to 480°C. We show that high-temperature laboratory spectra of basalts are consistent with the only existing multispectral data from the surface of Venus obtained by the photometers on the Venera 9 and 10 landers. We derive the FeO abundances for these landing sites of 12.2 and 9.5 weight %, respectively. From orbit, Venus’ surface is only observable on the nightside through small spectral windows near 1 μm where the CO(2) atmosphere is largely transparent. The new laboratory data show that different rock types can be distinguished using only a small set of spectral bands. Therefore, future orbital spectral observations can provide a much-needed global composition map. |
format | Online Article Text |
id | pubmed-7810366 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-78103662021-01-22 Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data Helbert, J. Maturilli, A. Dyar, M. D. Alemanno, G. Sci Adv Research Articles In situ information on the surface composition of Venus is based on measurements of a small number of landing sites. In the laboratory, we measured the emissivity of a range of igneous rocks at temperatures up to 480°C. We show that high-temperature laboratory spectra of basalts are consistent with the only existing multispectral data from the surface of Venus obtained by the photometers on the Venera 9 and 10 landers. We derive the FeO abundances for these landing sites of 12.2 and 9.5 weight %, respectively. From orbit, Venus’ surface is only observable on the nightside through small spectral windows near 1 μm where the CO(2) atmosphere is largely transparent. The new laboratory data show that different rock types can be distinguished using only a small set of spectral bands. Therefore, future orbital spectral observations can provide a much-needed global composition map. American Association for the Advancement of Science 2021-01-15 /pmc/articles/PMC7810366/ /pubmed/33523894 http://dx.doi.org/10.1126/sciadv.aba9428 Text en Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Helbert, J. Maturilli, A. Dyar, M. D. Alemanno, G. Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title | Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title_full | Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title_fullStr | Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title_full_unstemmed | Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title_short | Deriving iron contents from past and future Venus surface spectra with new high-temperature laboratory emissivity data |
title_sort | deriving iron contents from past and future venus surface spectra with new high-temperature laboratory emissivity data |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7810366/ https://www.ncbi.nlm.nih.gov/pubmed/33523894 http://dx.doi.org/10.1126/sciadv.aba9428 |
work_keys_str_mv | AT helbertj derivingironcontentsfrompastandfuturevenussurfacespectrawithnewhightemperaturelaboratoryemissivitydata AT maturillia derivingironcontentsfrompastandfuturevenussurfacespectrawithnewhightemperaturelaboratoryemissivitydata AT dyarmd derivingironcontentsfrompastandfuturevenussurfacespectrawithnewhightemperaturelaboratoryemissivitydata AT alemannog derivingironcontentsfrompastandfuturevenussurfacespectrawithnewhightemperaturelaboratoryemissivitydata |