PMID- 12829779
OWN - NLM
STAT- MEDLINE
DCOM- 20030711
LR  - 20131121
IS  - 1095-9203 (Electronic)
IS  - 0036-8075 (Linking)
VI  - 300
IP  - 5628
DP  - 2003 Jun 27
TI  - CO2 snow depth and subsurface water-ice abundance in the northern hemisphere of 
      Mars.
PG  - 2081-4
AB  - Observations of seasonal variations of neutron flux from the high-energy neutron 
      detector (HEND) on Mars Odyssey combined with direct measurements of the 
      thickness of condensed carbon dioxide by the Mars Orbiter Laser Altimeter (MOLA) 
      on Mars Global Surveyor show a latitudinal dependence of northern winter 
      deposition of carbon dioxide. The observations are also consistent with a shallow 
      substrate consisting of a layer with water ice overlain by a layer of drier soil. 
      The lower ice-rich layer contains between 50 and 75 weight % water, indicating 
      that the shallow subsurface at northern polar latitudes on Mars is even more 
      water rich than that in the south.
FAU - Mitrofanov, I G
AU  - Mitrofanov IG
AD  - Space Research Institute, Russian Academy of Sciences, Moscow, 117997, Russia. 
      imitrofa@space.ru
FAU - Zuber, M T
AU  - Zuber MT
FAU - Litvak, M L
AU  - Litvak ML
FAU - Boynton, W V
AU  - Boynton WV
FAU - Smith, D E
AU  - Smith DE
FAU - Drake, D
AU  - Drake D
FAU - Hamara, D
AU  - Hamara D
FAU - Kozyrev, A S
AU  - Kozyrev AS
FAU - Sanin, A B
AU  - Sanin AB
FAU - Shinohara, C
AU  - Shinohara C
FAU - Saunders, R S
AU  - Saunders RS
FAU - Tretyakov, V
AU  - Tretyakov V
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Science
JT  - Science (New York, N.Y.)
JID - 0404511
RN  - 0 (Dry Ice)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Atmosphere
MH  - *Dry Ice
MH  - Extraterrestrial Environment
MH  - *Mars
MH  - Seasons
MH  - Water/*analysis
EDAT- 2003/06/28 05:00
MHDA- 2003/07/12 05:00
CRDT- 2003/06/28 05:00
PHST- 2003/06/28 05:00 [pubmed]
PHST- 2003/07/12 05:00 [medline]
PHST- 2003/06/28 05:00 [entrez]
AID - 300/5628/2081 [pii]
AID - 10.1126/science.1084350 [doi]
PST - ppublish
SO  - Science. 2003 Jun 27;300(5628):2081-4. doi: 10.1126/science.1084350.