elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Mid-infrared spectroscopy of planetary analogs: A database for planetary remote sensing

Morlok, A. and Klemme, S. and Weber, Iris and Stojic, Aleksandra and Sohn, M. and Hiesinger, Harald and Helbert, Jörn (2019) Mid-infrared spectroscopy of planetary analogs: A database for planetary remote sensing. Icarus, 324, pp. 86-103. Elsevier. DOI: 10.1016/j.icarus.2019.02.010 ISSN 0019-1035

Full text not available from this repository.

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0019103518306754

Abstract

The MERTIS (MErcury Radiometer and Thermal Infrared Spectrometer) instrument onboard the ESA/JAXA BepiColombo mission will provide mid-infrared data, which will be crucial to characterize the surface mineralogy of Mercury. In order to interpret the results, we are creating a database of mid-infrared spectra. As part of a study of synthetic glasses which are to serve as analog materials for the interpretation of remote sensing and modeling data, we present mid-infrared data for analog materials of Mercury regolith, surface and mantle compositions. In addition, we provide data for similar analogs of Earth, Moon, Venus, and Mars rocks for a coherent picture. The analog samples have been first characterized by optical microscopy, Raman spectroscopy and EMPA. Powdered size fractions (0–25 μm, 25–63 μm, 63–125 μm, and 125–250 μm) were studied in reflectance in the mid-infrared range from 2.5 to 18 μm (550 to 2000 cm−1), additional micro-FTIR analyses were also obtained. Results for the size fractions of the surface and regolith analogs for Mercury show typical features for amorphous material with Christiansen Features (CF) at 8–8.1 μm, Reststrahlen Bands (RB) at 9.8–9.9 μm, and the Transparency Feature (TF) at 12 μm. The six bulk silicate Mercury analogs have varying CF positions from 8.1 to 9 μm, with RB crystalline features of various olivines dominating in most samples. Similarly, bulk silicate analogs of the other planetary bodies show glassy features for the surface analogs with CF from 7.9 μm (Earth Continental Crust) to 8.3 μm (Lunar Mare), strong RB from 9.5 μm (Earth Continental Crust) to 10.6 μm (Lunar Mare and Highlands). TF are usually very weak for the glassy analogs. Bulk silicate analogs for the other planetary bodies are again dominated by crystalline olivine features. Trends between SCFM (SiO2/(SiO2 + CaO + FeO + MgO)) index reflecting polymerization, CF and RB positions, and the SiO2 contents in previous studies are basically confirmed, but there is indication that several samples (Moon Mare and Highlands) do not follow the trend observed for low SiO2 samples and the RB position in earlier studies. Comparison with a ground based mid-IR spectrum of Mercury demonstrates general similarity in band positions with glassy Mercury surface and regolith material, and a chondrite based model of the planet. However, no mix so far can explain all spectral features.

Item URL in elib:https://elib.dlr.de/131745/
Document Type:Article
Title:Mid-infrared spectroscopy of planetary analogs: A database for planetary remote sensing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Morlok, A.Westfälische Wilhelms-Universität MünsterUNSPECIFIED
Klemme, S.Institut für Mineralogie, Westfäische Wilhelms-Universität Münster, GermanyUNSPECIFIED
Weber, IrisWestfälische Wilhelms-Universität MünsterUNSPECIFIED
Stojic, AleksandraWestfälische Wilhelms-Universität MünsterUNSPECIFIED
Sohn, M.Hochschule Emden/Leer , Constantiaplatz 4, 26723 Emden , GermanyUNSPECIFIED
Hiesinger, HaraldInstitut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Muenster, GermanyUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
Date:2019
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:324
DOI :10.1016/j.icarus.2019.02.010
Page Range:pp. 86-103
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Mid-infrared, spectroscopy, planetary analogs
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):Projekt BepiColombo MERTIS und BELA
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Amore, Dr. Mario
Deposited On:04 Dec 2019 12:26
Last Modified:04 Dec 2019 12:26

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.