Zobrazeno 1 - 7
of 7
pro vyhledávání: '"E. I. Schaefer"'
Publikováno v:
Icarus. 317:621-648
The origin or origins of recurring slope lineae (RSL) on Mars are enigmatic. These seasonally dark, linear features correlate with temperatures appropriate for liquid water or brine. They also progress slowly downslope and fade (disappear) when inact
Autor:
Christopher W. Hamilton, Ali M. Bramson, E. I. Schaefer, S. P. Beard, M. M. Sori, Catherine D. Neish
Publikováno v:
Journal of Geophysical Research: Solid Earth. 126
Can fractal analysis enable us to classify a lava flow to a morphologic type (e.g., ‘a‘ā vs. pāhoehoe) solely by examining the geometry of the flow’s margin? If so, these classifications would prov...
Autor:
Alfred S. McEwen, Leslie K. Tamppari, Matthew Chojnacki, Sarah S. Sutton, E. I. Schaefer, Colin M. Dundas
Publikováno v:
Journal of Geophysical Research: Planets. 126
Following the planet-encircling dust event (PEDE) of Mars Year (MY) 34, MRO/HiRISE has seen many more candidate RSL than in typical Mars years. They were imaged at more than 285 unique locations fr...
Autor:
R. C. Elphic, Joshua L. Bandfield, Jennifer L. Heldmann, Lynn M. Carter, S. E. Kobs Nawotniak, Catherine D. Neish, J. R. Skok, D. S. S. Lim, Scott S. Hughes, William Brent Garry, Christopher W. Hamilton, E. I. Schaefer, Gordon R. Osinski
Publikováno v:
Icarus. 281:73-89
Lunar impact melt deposits have unique physical properties. They have among the highest observed radar returns at S-Band (12.6 cm wavelength), implying that they are rough at the decimeter scale. However, they are also observed in high-resolution opt
Autor:
E. I. Schaefer, Jon D. Pelletier
Publikováno v:
Computers & Geosciences. 145:104554
In many geomorphic applications, it is necessary to reduce a polygon to a set of axial lines. For example, consider a fluvial channel network. On the one hand, this network has a polygonal footprint with reaches of finite width organized into a branc
Autor:
E. I. Schaefer, Shane Byrne, Sarah Mattson, Marion Massé, Alfred S. McEwen, Lujendra Ojha, Colin M. Dundas, James J. Wray
Publikováno v:
Icarus. 231:365-376
Recurring Slope Lineae (RSL) are active features on Mars that might require flowing water. Most examples observed through 2011 formed on steep, equator-facing slopes in the southern mid-latitudes. They form and grow during warm seasons and fade and o
Publikováno v:
Geophysical Research Letters. 38
[1] A fresh, 1.85 km diameter impact crater in the midlatitudes of Mars (38°N) named Vaduz exhibits distinctive crater‐related geological subunits (facies) extending up to ∼15 radii from the rim crest and perched >10 m above the adjacent plains.