title: Radar soundings of the subsurface of Mars.
abstract: The martian subsurface has been probed to kilometer depths by the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument aboard the Mars Express orbiter. Signals penetrate the polar layered deposits, probably imaging the base of the deposits. Data from the northern lowlands of Chryse Planitia have revealed a shallowly buried quasi-circular structure about 250 kilometers in diameter that is interpreted to be an impact basin. In addition, a planar reflector associated with the basin structure may indicate the presence of a low-loss deposit that is more than 1 kilometer thick.
authors.affiliation: Infocom Department, "La Sapienza" University of Rome, 00184 Rome, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Picardi
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Plaut
authors.forename: Daniela
authors.initials: D
authors.lastname: Biccari
authors.forename: Ornella
authors.initials: O
authors.lastname: Bombaci
authors.forename: Diego
authors.initials: D
authors.lastname: Calabrese
authors.forename: Marco
authors.initials: M
authors.lastname: Cartacci
authors.forename: Andrea
authors.initials: A
authors.lastname: Cicchetti
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Clifford
authors.forename: Peter
authors.initials: P
authors.lastname: Edenhofer
authors.forename: William M
authors.initials: WM
authors.lastname: Farrell
authors.forename: Costanzo
authors.initials: C
authors.lastname: Federico
authors.forename: Alessandro
authors.initials: A
authors.lastname: Frigeri
authors.forename: Donald A
authors.initials: DA
authors.lastname: Gurnett
authors.forename: Tor
authors.initials: T
authors.lastname: Hagfors
authors.forename: Essam
authors.initials: E
authors.lastname: Heggy
authors.forename: Alain
authors.initials: A
authors.lastname: Herique
authors.forename: Richard L
authors.initials: RL
authors.lastname: Huff
authors.forename: Anton B
authors.initials: AB
authors.lastname: Ivanov
authors.forename: William T K
authors.initials: WT
authors.lastname: Johnson
authors.forename: Rolando L
authors.initials: RL
authors.lastname: Jordan
authors.forename: Donald L
authors.initials: DL
authors.lastname: Kirchner
authors.forename: Wlodek
authors.initials: W
authors.lastname: Kofman
authors.forename: Carlton J
authors.initials: CJ
authors.lastname: Leuschen
authors.forename: Erling
authors.initials: E
authors.lastname: Nielsen
authors.forename: Roberto
authors.initials: R
authors.lastname: Orosei
authors.forename: Elena
authors.initials: E
authors.lastname: Pettinelli
authors.forename: Roger J
authors.initials: RJ
authors.lastname: Phillips
authors.forename: Dirk
authors.initials: D
authors.lastname: Plettemeier
authors.forename: Ali
authors.initials: A
authors.lastname: Safaeinili
authors.forename: Roberto
authors.initials: R
authors.lastname: Seu
authors.forename: Ellen R
authors.initials: ER
authors.lastname: Stofan
authors.forename: Giuliano
authors.initials: G
authors.lastname: Vannaroni
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Watters
authors.forename: Enrico
authors.initials: E
authors.lastname: Zampolini