Spatial Distribution of Human Geomorphic Activity in the United States: Comparison with Rivers
ثبت نشده
چکیده
By somemeasures, the role of humans in shaping the landscape is nowgreater than that of any other geomorphic agent. This effect varies spatially. In the United States, it is greatest in the east where population density is highest, and particularly in WestVirginia andneighbouring stateswhere coalmining is added tomoregeneral earth-movingactivities. For comparison, rivers in the United States move less soil, and their influence is greatest in the western part of the country where steep, sparsely vegetated slopes contribute to high sediment loads. Copyright# 1999 John Wiley & Sons, Ltd.
منابع مشابه
Investigation and Comparison of Nursing Informatics Development Factors in Iran and Selected Countries: a Comparative Study
Introduction: Nursing informatics is effective on the optimal use of technology and health promotion. Using the experiences of successful countries in this field, can facilitate the improvement of nursing care quality. The purpose of this study is a comparison of nursing informatics development factors in Iran and leading countries. Method: The present study was conducted in a descriptive-compa...
متن کاملComparison of Deterministic and Geomorphic Methods for Determining Spatial Variations of Nitrate in Ghaemshahr-Juybar Plan
Nitrate is one of the most important pollutants of surface water and underground water resources which has adverse effects on the health of consumers. Due to lack of sufficient opportunity and budget, in practice, full and timely sampling of all wells in each area is not possible. So the amount of nitrate in certain parts according to the adjacent groundwater is of particular importance in...
متن کاملGeomorphic Effects of Wood in Rivers
—Wood has been falling into rivers for millions of years, resulting in both local effects on channel processes and integrated influences on channel form and dynamics over a wide range of spatial and temporal scales. Effects of stable pieces of wood on local channel hydraulics and sediment transport can influence rates of bank erosion, create pools, or initiate sediment deposition and bar format...
متن کاملSurvey of geomorphic and morphotectonic indixes to assessment active tectonics in Abdoughi area, North east of Yazd, Central Iran
Morphotectonic is one of the new reconition methods of tectonic movements and earthquakes knowledge. Study and measurement of landscapes and forms which made by active tectonics are important objects in morphology science. Active tectonic movements have recorded in the morphology of rivers, drainages, alluvial fans and mountain fronts in a region. Research area is located between 55° 30' -57° 0...
متن کاملThe United States Sanctions against the Islamic Republic of Iran; from Unilateralism to Violations of International Human Rights
Today, the global system is formed based on multilateralism, which is based on international relations and the origin of international organizations and institutions. But this matter is endangered by the unilateralism pursued by the United States of America. Coercive unilateral measures such as sanctions, threats, military intervention, and even measures such as withdrawal from international tr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999