RECENT HAZARDOUS GEOMORPHIC PROCESSES ON GREAT CAUCASUS

Recent climatic change and catastrophic geomorphic processes in mountain environments

Climatic warming during the last 100-150 years has resulted in a significant glacier ice loss from mountainous areas of the world. Certain natural processes which pose hazards to people and development in these areas have accelerated as a result of this recent deglaciation. These include glacier avalanches, landslides and slope instability caused by glacier debuttressing, and outburst floods fr...

Comments on Mezmaiskaya (north Caucasus)

The recent publication of the upper levels at Mezmaiskaya has made it possible to better understand the Early Upper Paleolithic in this cave and, more generally, for area in the Caucasus region (Golovanova eta!. , 2006, specifically Eur-asian Prehistory Vol. 4: 2: 2006: 43-78). In particular , the early dates (36,100 ± 2,300 BP) demonstrate the importance of this site in the study of exchanges ...

Evaluation of geographic, geomorphic and human influences on Great Lakes wetland indicators: A multi-assemblage approach

Developing effective indicators of ecological condition requires calibration to determine the geographic range and ecosystem type appropriate for each indicator. Here, we demonstrate an approach for evaluating the relative influence of geography, geomorphology and human disturbance on patterns of variation in biotic indicators derived from multiple assemblages for ecosystems that span broad spa...

How Should Mathematical Models of Geomorphic Processes be Judged?

Mathematical models of geomorphic processes can have value as both predictive tools and precise conceptual frameworks. Well-posed mechanistic models have great conceptual value because they link geomorphic processes to universal scientific principles, such as conservation of energy, momentum, and mass. Models without this linkage (e.g., models based exclusively on cellular rules or empirical co...

When Do Rocks Move? Sediment Transport and Geomorphic Processes