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The present-day flux of large meteoroids on the lunar surface—A synthesis of models and observational techniques

Oberst, J. and Christou, A. and Suggs, R. and Moser, D. and Daubar, I. J. and McEwen, A. S. and Burchell, M. and Kawamura, T. and Hiesinger, H. and Wünnemann, K. and Wagner, R. and Robinson, M. S. (2012) The present-day flux of large meteoroids on the lunar surface—A synthesis of models and observational techniques. Planetary and Space Science, 74 (1), pp. 179-193. Elsevier. DOI: 10.1016/j.pss.2012.10.005

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Official URL: http://www.sciencedirect.com/science/article/pii/S0032063312002966


Monitoring the lunar surface for impacts is a highly rewarding approach to study small asteroids and large meteoroids encountering the Earth–Moon System. The various effects of meteoroids impacting the Moon are described and results from different detection and study techniques are compared. While the traditional statistics of impact craters allow us to determine the cumulative meteoroid flux on the lunar surface, the recent successful identification of fresh craters in orbital imagery has the potential to directly measure the cratering rate of today. Time-resolved recordings, e.g., seismic data of impacts and impact flash detections clearly demonstrate variations of the impact flux during the lunar day. From the temporal/spatial distribution of impact events, constraints can be obtained on the meteoroid approach trajectories and velocities. The current monitoring allows us to identify temporal clustering of impacts and to study the different meteoroid showers encountering the Earth–Moon system. Though observational biases and deficiencies in our knowledge of the scaling laws are severe, there appears to be an order-of-magnitude agreement in the observed flux within the error limits. Selenographic asymmetries in the impact flux (e.g., for equatorial vs. polar areas) have been predicted. An excess of impacts on the lunar leading hemisphere can be demonstrated in current data. We expect that future missions will allow simultaneous detections of seismic events and impact flashes. The known locations and times of the flashes will allow us to constrain the seismic solutions. While the numbers of flash detections are still limited, coordinated world-wide observations hold great potential for exploiting this observation technique. The potential for identification of fresh craters in high-resolution orbital image data has just barely been tapped, but should improve significantly with the LRO extended mission.

Item URL in elib:https://elib.dlr.de/80729/
Document Type:Article
Title:The present-day flux of large meteoroids on the lunar surface—A synthesis of models and observational techniques
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Oberst, J.juergen.oberst (at) dlr.deUNSPECIFIED
Christou, A.Armagh Observatory, College Hill, Armagh BT61 9DG, UKUNSPECIFIED
Daubar, I. J.Lunar and Planetary Lab, University of Arizona, Tucson, AZ 85721, USAUNSPECIFIED
McEwen, A. S.Lunar and Planetary Lab, University of Arizona, Tucson, AZ 85721, USAUNSPECIFIED
Burchell, M.School of Physical Sciences, University of Kent, Canterbury, Kent CT2 7NH, UKUNSPECIFIED
Kawamura, T.ISAS/JAXA, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, JapanUNSPECIFIED
Hiesinger, H.Institut für Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, GermanyUNSPECIFIED
Wünnemann, K.Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Invalidenstr. 43, 10115 Berlin, GermanyUNSPECIFIED
Wagner, R.roland.wagner (at) dlr.deUNSPECIFIED
Robinson, M. S.School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USAUNSPECIFIED
Date:December 2012
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.pss.2012.10.005
Page Range:pp. 179-193
Keywords: Moon; Meteroids; Observation techniques; Models
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 - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Deposited By: Beisembin, Bauyrzhan
Deposited On:18 Jan 2013 08:28
Last Modified:08 Mar 2018 18:48

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