منابع مشابه
Do ice caves exist on Mars?
We have developed a numerical model for assessing the lifetime of ice deposits in martian caves that are open to the atmosphere. Our model results and sensitivity tests indicate that cave ice would be stable over significant portions of the surface of Mars. Ice caves on Earth commonly occur in lava tubes, and Mars has been significantly resurfaced by volcanic activity during its history, includ...
متن کاملkocjan Caves, Slovenia
Karstic landscape is a specific heritage, where surface and underground are part of single landscape. Where underground (caves, shafts...) played an important role in the development of surface. Landscape where natural an anthropogenic processes worked hand in hand. Caves were often treated as being separate from the outside landscape, recorded in isolation form landscape which they are part of...
متن کاملEncyclopedia of Caves
except in a few extremely arid regions. Figure 1 shows the variety of sources for the water responsible for the development of caves. Most of the caves are dissolved by the movement of groundwater in contemporary drainage basins. In coastal regions, the mixing of fresh groundwater with saltwater produces an aggressive solution that can dissolve out caves. Some caves (for example, the large cave...
متن کاملThe Anthropology of Mesoamerican Caves
Caves used in antiquity had multiple functions and often long use histories. While many were employed for shelter, some became ritual sites. Revitalized interest in caves in Mesoamerica combines archaeology, ethnography, ethnohistory, epigraphy, and osteology. The current, general anthropological study of caves offers exceptional insights into early Mesoamerican customs, ceremonies, and beliefs...
متن کاملComment on ‘‘coastal Caves in Bahamian Eolian Calcarenites: Differentiating between Sea Caves and Flank Margin Caves Using Quantitative Morphology’’
Waterstrat et al. (JCKS (2010), 72 (2) 61–74) compared means of geometric measurements of sea and flank margin caves with the Student t-test and concluded that these different types of caves could be ‘‘statistically differentiated.’’ However, their use of the t-test is dependent on the data being normally distributed. The data that were analyzed, cave area to perimeter ratio, entrance-width to ...
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ژورنال
عنوان ژورنال: Science
سال: 1913
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.37.965.980