نتایج جستجو برای: landforms

تعداد نتایج: 1749  

2008
S. Bouley D. Loizeau N. Mangold V. Ansan J. P Bibring Y. Langevin

Introduction: Tyrrhena Terra is located in cratered and dissected Noachian terrains in the southern hemisphere [1] south of Isidia Planitia and north of Hellas basin. Tyrrhena Terra contains both highlands and a series of intercrater plains. In this region, many outcrops of phyllosilicates are observed by OMEGA spectrometer on many craters walls or ejecta [2, 3]. Several plains in Tyrrhena Terr...

2001
RONALD I. DORN

Three hundred and twenty-eight geomorphology articles published in the last quarter of the 20th century were cited 20 or more times in Institute for Scientific Information (ISI) indices, as of 15 May 2001. At the close of the 20th century, wellcited geomorphology is highly multidisciplinary and interdisciplinary with the most dominant fields being in biological, civil engineering, earth science...

Journal: :Journal of Geography (Chigaku Zasshi) 1994

Journal: :Geological Society, London, Memoirs 2021

Abstract Submarine geomorphology underwent significant development in the second half of twentieth century, largely thanks to advances technology by military, navigation and hydrocarbon industry, which were later transferred academic commercial sectors. In this chapter we summarize key methods used submarine between 1950 2000, include sidescan sonar, multibeam echo sounder, reflection seismolog...

Journal: :Geomorphology RAS 2015

2008
Ralph K. Straumann Ross Purves

Methods to automatically derive landforms have typically focused on pixel-based, bottom-up approaches and most commonly on the derivation of topographic eminences. In this paper we describe an object-based, top-down algorithm to identify valley floors. The algorithm is based on a region growing approach, seeded by thalwegs with pixels added to the region according to a threshold gradient value....

2015

In the process of analyzing aerial photographs to obtain information on the engineering characteristics of soils, the first and perhaps the most important step is to identify the landform. The landform may consist of hills, valleys, plains, terraces, beaches, dunes, and other topo­ graphic features largely created by the forces of erosion. The im­ portance of the landform lies in its relation t...

2013
D. R. MARCHANT S. L. MACKAY J. L. LAMP A. T. HAYDEN J. W. HEAD

The Dry Valleys are subdivided into three microclimate zones on the basis of summertime measurements of atmospheric temperature, soil moisture, relative humidity and wind-speed/ direction. Subtle variations in these climate parameters result in considerable differences in process geomorphology and in the development of unique landforms within each zone. The mapped zones include a coastal thaw z...

2011
Helena Mitasova Russell S. Harmon Katherine J. Weaver Nathan J. Lyons Margery F. Overton

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Scientific visualization of geospatial data provides highly effective tools for analys...

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