Water Beneath the Surface of Mars, Bound Up in Sulfates

the study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media

امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...

Formation Rate of Amorphous Magnesium Sulfates at Low Temperatures Approaching the Current Surface Conditions on Mars

Amorphous Mg-sulfates: The existence of hydrous Mg-sulfates in martian surface materials has been implied by all landed missions on Mars to date[17], and has been identified by orbital remote sensing (OMEGA and CRISM) [8-10]. Well-controlled laboratory experiments on hydrous sulfates [11-19] provide the fundamental underpinning to link the surface and orbital observations, as well as to address...

Sulfates in Martian layered terrains: the OMEGA/Mars Express view.

The OMEGA/Mars Express hyperspectral imager identified hydrated sulfates on light-toned layered terrains on Mars. Outcrops in Valles Marineris, Margaritifer Sinus, and Terra Meridiani show evidence for kieserite, gypsum, and polyhydrated sulfates. This identification has its basis in vibrational absorptions between 1.3 and 2.5 micrometers. These minerals constitute direct records of the past aq...

Crawling Beneath the Free Surface: Water Snail Locomotion

Sungyon Lee, John W. M. Bush, A. E. Hosoi, and Eric Lauga 1 Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 2 Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 3 Department of Mechanical and Aerospace Eng...

Looking beneath the surface.