%0 Journal Article %1 McCord2002 %A McCord, T. B. %A Teeter, G. %A Hansen, G. B. %A Sieger, M. T. %A Orlando, T. M. %D 2002 %J Journal of Geophysical Research-Planets %K AMORPHOUS ATMOSPHERE; D2O DESORPTION DISSOCIATION; ELECTRON-STIMULATED EVIDENCE; FAULTS; GEOLOGICAL ICE; OCEAN; SATELLITES; SODIUM; STRIKE-SLIP SUBSURFACE WATER %N E1 %P 5004 %T Brines exposed to Europa surface conditions %V 107 %X 1 Evidence for an ocean beneath the icy crust of Europa includes reflectance spectra of disrupted surface regions indicating hydrated materials such as salts. We simulated exposure of salty brine on the cold surface of Europa by flash-freezing sulfate and carbonate solutions. This produces materials that have near-infrared reflectance spectra distinct from those for crystalline minerals and more similar to those for Europa's non-ice regions. These new spectroscopic data, along with geophysical evidence, geochemical models, and meteorite studies, strongly suggest that the non-ice materials in the disrupted regions on Europa's surface contain large amounts of disordered and heavily hydrated MgSO4 and perhaps Na2SO4 that are endogenic in origin.

@article{McCord2002, abstract = {[1] Evidence for an ocean beneath the icy crust of Europa includes reflectance spectra of disrupted surface regions indicating hydrated materials such as salts. We simulated exposure of salty brine on the cold surface of Europa by flash-freezing sulfate and carbonate solutions. This produces materials that have near-infrared reflectance spectra distinct from those for crystalline minerals and more similar to those for Europa's non-ice regions. These new spectroscopic data, along with geophysical evidence, geochemical models, and meteorite studies, strongly suggest that the non-ice materials in the disrupted regions on Europa's surface contain large amounts of disordered and heavily hydrated MgSO4 and perhaps Na2SO4 that are endogenic in origin.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {McCord, T. B. and Teeter, G. and Hansen, G. B. and Sieger, M. T. and Orlando, T. M.}, biburl = {https://www.bibsonomy.org/bibtex/28a148b2fa4ce8d7e0004a1617141f923/svance}, citedreferences = {BROWN ME, 1996, Nature, V380, P229 ; CANNON WR, 1994, J PHYS CHEM-US, V98, P6225 ; CARLSON RW, 1999, Science, V286, P97 ; COOPER JF, 2001, Icarus, V149, P133 ; FAGENTS EA, 2000, Icarus, V1344, P54 ; FANALE FP, 1977, PLANETARY SATELLITES, P379 ; FANALE FP, 1998, LUNAR PLANET SCI, V29, P1248 ; FANALE FP, 2000, J GEOPHYS RES-PLANET, V105, P22647 ; FANALE FP, 2001, J GEOPHYS RES-PLANET, V106, P14595 ; Greeley R, 1998, Icarus, V135, P4 ; Greenberg R, 1999, Icarus, V141, P263 ; HANSEN GB, 2000, B AM ASTRON SOC, V32, P1068 ; HOPPA G, 1999, Icarus, V141, P287 ; HOPPA G, 2000, J GEOPHYS RES-PLANET, V105, P22617 ; HUANG SR, 1966, ASTM SPEC TECH PUBL, V40, P121 ; JOHNSON RE, 2000, ADV CHEM PHYSICS DYN, P390 ; JOHNSON RE, 2000, Icarus, V143, P429 ; KARGEL JS, 1991, Icarus, V94, P368 ; KARGEL JS, 1999, LUNAR PLANET SCI, V30, P1851 ; KARGEL JS, 2000, Icarus, V148, P226 ; KIMMEL GA, 1995, PHYS REV LETT, V75, P2606 ; KIVELSON MG, 1999, J GEOPHYS RES-SPACE, V104, P4609 ; KIVELSON MG, 2000, Science, V289, P1340 ; MCCORD TB, 1998, Science, V280, P1242 ; MCCORD TB, 1999, J GEOPHYS RES, V104, P11824 ; MCCORD TB, 1999, J GEOPHYS RES-PLANET, V104, P27157 ; MCCORD TB, 2000, B AM ASTRON SOC, V32, P1068 ; MCCORD TB, 2001, J GEOPHYS RES-PLANET, V106, P3311 ; ORLANDO TM, 1997, SURF SCI, V390, P79 ; PAPPALARDO RT, 1998, Nature, V391, P365 ; PAPPALARDO RT, 1999, J GEOPHYS RES-PLANET, V104, P24015 ; SHIRLEY JH, 2000, EOS T AGU S, V81 ; SMITH RS, 1996, SURF SCI, V367, L13 ; SPENCER JR, 1999, Science, V284, P1514 ; Stevenson D, 2000, Science, V289, P1305 ; VANKEULEN L, 2000, LUNAR PLANET SCI, V31, P1539 ; YAKSHINSKIY BV, 1999, Nature, V400, P642 ; YAKSHINSKIY BV, 2001, J GEOPHYS RES, P33303 ; ZOLOTOV MY, 2001, J GEOPHYS RES, P32815}, interhash = {e06b08680b782141380434aebeb3fcf5}, intrahash = {8a148b2fa4ce8d7e0004a1617141f923}, journal = {Journal of Geophysical Research-Planets}, keywords = {AMORPHOUS ATMOSPHERE; D2O DESORPTION DISSOCIATION; ELECTRON-STIMULATED EVIDENCE; FAULTS; GEOLOGICAL ICE; OCEAN; SATELLITES; SODIUM; STRIKE-SLIP SUBSURFACE WATER}, number = {E1}, owner = {svance}, pages = 5004, timestamp = {2009-11-03T20:22:01.000+0100}, title = {Brines exposed to Europa surface conditions}, volume = 107, year = 2002 }