نتایج جستجو برای: periglacial system
تعداد نتایج: 2231487 فیلتر نتایج به سال:
identifying active morphogenetic landforms in payam pass (northwestern iran) for geotourism planning
the proposal of geomorphologic matters in relation to tourism is one of interdisciplinary research approaches that has been considered in recent years. in this manner, geomorphological sites are defined as geomorphological landforms and processes that have acquired a scenic/aesthetic, scientific, cultural/historical and/or a social/economic value due to human perception of geological, geomorpho...
Especially due to their ability to provide information touch-less and with complete spatial coverage airand satellite-borne remote sensing technologies have a large and still growing importance for analyzing high mountain hazards. Periglacial lakes and their outburst risk can be detected using aerial and satellite imagery as well as related changes be monitored. In a similar way, it is possible...
Introduction: The recent observations about different waterand ice-related features on Nepenthes region of Mars [1] [2] [3], and the evidence of changes on the Oceanus Borealis’ water level on this region [4] [5] inspired the work here presented. What are exactly the water-related landforms (glacial, periglacial, fluvial, etc) existing in this region of Mars? How are they spatially distributed?...
Liquid water is not stable under current martian surface conditions, but the presence of small gullies on the polewardfacing slopes of midto highlatitude martian surfaces suggests that erosion by liquid water might have occurred. Costard et al. (p. 110) developed a global climate model for Mars when it had a higher obliquity (about 300,000 years ago). Their model shows that more melting of the ...
Abstract Pleistocene periglacial activity in eastern Australia was widespread and has been predicted to have extended along much of the east coast. This paper describes block deposits New England Tablelands, Australia, as far north 30°S. These are characterized by openwork blocks on slopes below angle repose. The positioned where frost cracking significant range area up 8 ha. Surface exposure d...
Introduction: During the Viking era, Mars' recent climatic history was held to be cold and dry with little evidence for long-lived liquid water near the surface; signs of a past wetter, warmer climate were confined to ancient Noachian or Hesperian-aged terrains. However, data from recent Mars missions have revealed contemporary near-surface water-ice to be abundant at high latitudes [1, 2], and...
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