کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10701311 | 1021128 | 2013 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Outflow channels with deltaic deposits in Ismenius Lacus, Mars
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Outflow channels with deltaic deposits in Ismenius Lacus, Mars Outflow channels with deltaic deposits in Ismenius Lacus, Mars](/preview/png/10701311.png)
چکیده انگلیسی
A connected series of outflow channels in the Ismenius Lacus quadrangle are identified for the first time and characterized using High Resolution Stereo Camera images of Mars Express, the Context camera images of Mars Reconnaissance Orbiter and the topography of the Mars Observer Laser Altimeter. These channels (named Okavango Valles), which stretch over >400Â km south to north and join the northern plains, were identified from braided channels, scour/groove marks, poorly sinuous valleys and depositional landforms. Discharge rates were estimated to 0.1-5Â ÃÂ 106Â m3Â sâ1 from analysis of the topography of scour marks. Pathways of channels segments were extracted from topography showing a unique source at a breached crater rim, suggesting overflow from ponded depressions. A series of delta fans are observed inside depressions along the channel pathways. The presence of these deltas formed in former bodies of water is a compelling argument for formation of this outflow channel system by fluvial flows. The similarity of these flows with other outflow channels on Mars proves that volcanically-related outflows cannot explain all such features. In addition, this study also shows that catastrophic floods are able to create fan deltas in transient lakes. This example has to be taken into account in the interpretation of late stage fans associated with poorly branched valleys and single channels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 226, Issue 1, SeptemberâOctober 2013, Pages 385-401
Journal: Icarus - Volume 226, Issue 1, SeptemberâOctober 2013, Pages 385-401
نویسندگان
Nicolas Mangold, Alan D. Howard,