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Scoria cones on Mars: Detailed investigation of morphometry based on high-resolution digital elevation models

Broz, Petr and Cadek, O. and Hauber, Ernst and Rossi, A.P. (2015) Scoria cones on Mars: Detailed investigation of morphometry based on high-resolution digital elevation models. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 120, pp. 1512-1527. Wiley. DOI: 10.1002/ 2015JE004873 ISSN 2169-9097

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/2015JE004873/full

Abstract

We analyze the shapes of 28 hypothesized scoria cones in three regions on Mars, i.e., Ulysses and Hydraotes Colles and Coprates Chasma. Using available High-Resolution Imaging Science Experiment and Context Camera (CTX) digital elevation models, we determine the basic morphometric characteristics of the cones and estimate from ballistic modeling the physical parameters of volcanic eruptions that could have formed them.When compared to terrestrial scoria cones,most of the studied cones show larger volumes (up to 4.2 × 109m3), larger heights (up to 573m), and smaller average slopes. The average slopes of the Ulysses, Hydraotes, and Coprates cones range between 7° and 25°, and the maximum slopes only rarely exceed 30°, which suggests only a minor role of scoria redistribution by avalanching. Ballistic analysis indicates that all cones were formed in a similar way, and their shapes are consistent with an ejection velocity about 2 times larger and a particle size about 20 times smaller than on Earth. Our results support the hypothesis that the investigated edifices were formed by low-energy Strombolian volcanic eruptions and hence are equivalent to terrestrial scoria cones. The cones in Hydraotes Colles and Coprates Chasma are on average smaller and steeper than the cones in Ulysses Colles, which is likely due to the difference in topographic elevation and the associated difference in atmospheric pressure. This study provides the expected morphometric characteristics of Martian scoria cones, which can be used to identify landforms consistent with this type of activity elsewhere on Mars and distinguish them from other conical edifices.

Item URL in elib:https://elib.dlr.de/100486/
Document Type:Article
Title:Scoria cones on Mars: Detailed investigation of morphometry based on high-resolution digital elevation models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Broz, PetrInstitute of Geophysics, ASCR, Prague, Czech RepublicUNSPECIFIED
Cadek, O.Charles University in Prague, Prague, Czech RepublicUNSPECIFIED
Hauber, Ernsternst.hauber (at) dlr.deUNSPECIFIED
Rossi, A.P.Jacobs University BremenUNSPECIFIED
Date:2015
Journal or Publication Title:JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:120
DOI :10.1002/ 2015JE004873
Page Range:pp. 1512-1527
Publisher:Wiley
ISSN:2169-9097
Status:Published
Keywords:Mars, volcanism, gravity, modeling, pyroclastics
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):R - Projekt MARS-EXPRESS / HRSC
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:04 Dec 2015 09:14
Last Modified:07 Aug 2017 10:19

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