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

Color Variations on the Surface of Gaspra.

Head, J.W.(1) and Murchie, S.L.(1) and Belton, M.J.S.(2) and Veverka, J.(3) and McEwen, A.(4) and Anger, C.D.(5) and Carr, M.H.(6) and Chapman, C.R.(7) and Davies, M.E.(8) and Greeley, R.(9) and Greenberg, R.(10) and Ingersoll, A.P.(11) and Johnson, T.V.(12) and Klaasen, K.P.(12) and Neukum, G. and Pieters, C.B.(1) (1992) Color Variations on the Surface of Gaspra. World Space Congress COSPAR, Washington, USA, 28.8.-5.9.92.

Full text not available from this repository.

Abstract

3-filter color images of Gaspra (0.41, 0.56 and 0.99mm) reveal that the asteroid's surface is spectrally heterogeneous, with violet/ green and IR/green ratios varying by up to 10% and 20-30% respectiv- ly. Two types of spectral variations are recognized and correlate spatially with resolvable morphologic features. (I) Approximately the small patches have anomalously high violet/green ratios and low IR/green ratios. Indicating a bluer spectral slope and enhanced matic absorption. Most of these patches correlate with small impact craters, suggesting that relativly fresh substrate is exposed. (II) Central portions of the asteroid's "facets" have high violet/ green and high IR/green ratios, indicating subdued spectral contrast and mafic absorptions. Bluer, mafic patches associated with small craters are noticeably absent from these latter regions. The spatial and spectral properties of these spectrally subdued areas are suggesttive of accumulation of optically altered. Laterally transported material on gravitationally low portions of the asteroid.We are investigating mechanisms that could produce this distinct type of spectral heterogeneity.

Item URL in elib:https://elib.dlr.de/34618/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1992,
Title:Color Variations on the Surface of Gaspra.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Head, J.W.(1)UNSPECIFIEDUNSPECIFIED
Murchie, S.L.(1)UNSPECIFIEDUNSPECIFIED
Belton, M.J.S.(2)UNSPECIFIEDUNSPECIFIED
Veverka, J.(3)UNSPECIFIEDUNSPECIFIED
McEwen, A.(4)UNSPECIFIEDUNSPECIFIED
Anger, C.D.(5)UNSPECIFIEDUNSPECIFIED
Carr, M.H.(6)UNSPECIFIEDUNSPECIFIED
Chapman, C.R.(7)UNSPECIFIEDUNSPECIFIED
Davies, M.E.(8)UNSPECIFIEDUNSPECIFIED
Greeley, R.(9)UNSPECIFIEDUNSPECIFIED
Greenberg, R.(10)UNSPECIFIEDUNSPECIFIED
Ingersoll, A.P.(11)UNSPECIFIEDUNSPECIFIED
Johnson, T.V.(12)UNSPECIFIEDUNSPECIFIED
Klaasen, K.P.(12)UNSPECIFIEDUNSPECIFIED
Neukum, G.UNSPECIFIEDUNSPECIFIED
Pieters, C.B.(1)UNSPECIFIEDUNSPECIFIED
Date:1992
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Event Title:World Space Congress COSPAR, Washington, USA, 28.8.-5.9.92
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:UNSPECIFIED
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institut für Optoelektronik
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 09:36

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.