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Geomorphology in Deserts [Pehme köide]

  • Formaat: Paperback / softback, 436 pages, kõrgus x laius x paksus: 234x156x25 mm, kaal: 680 g
  • Ilmumisaeg: 15-Jul-2022
  • Kirjastus: University of California Press
  • ISBN-10: 0520329570
  • ISBN-13: 9780520329577
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  • Formaat: Paperback / softback, 436 pages, kõrgus x laius x paksus: 234x156x25 mm, kaal: 680 g
  • Ilmumisaeg: 15-Jul-2022
  • Kirjastus: University of California Press
  • ISBN-10: 0520329570
  • ISBN-13: 9780520329577
This book examines the landforms, soils, and geomorphological processes of deserts, which cover over 20% of Earth's land surface. Despite their vastness and the significant body of literature on the topic, deserts remain underrepresented in comprehensive geomorphological surveys, with notable exceptions like Walther's Das Gesetz der Wiistenbildung (1924), Cotton's Climatic Accidents in Landscape Making (1942), and Tricart and Cailleux's Le Modelé des Régions Sèches (1961). Our study builds on these works, incorporating our field experiences in deserts across North America, South America, North Africa, and Pakistan, while primarily drawing on English-language research and emphasizing contemporary geomorphological systems at different scales. By focusing on present processes shaping landforms and soils, we have given less attention to regional chronologies of landform development, a consequence of our selective approach. The field of desert geomorphology still grapples with speculative theories, such as parallel slope retreat and pervasive wind erosion, which often overshadow empirical evidence. We aim to provide grounded generalizations, clarify contested ideas, and pose meaningful questions to establish a baseline for future research, hoping to contribute to a deeper understanding of the dynamic processes shaping desert landscapes.

This title is part of UC Press's Voices Revived program, which commemorates University of California Presss mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1973.
Preface ix
Acknowledgments xi
Part 1 The Desert Context
1.1 Nature of desert research
1(3)
1.2 Geomorphological studies in deserts
4(2)
1.3 Distinctiveness and diversity of desert conditions
6(32)
1.3.1 Deserts and climate
7(6)
1.3.2 Vegetation and bare ground
13(2)
1.3.3 Winds
15(3)
1.3.4 Hydrological conditions
18(8)
1.3.5 Processes and change
26(12)
1.4 Geomorphological generalization
38(14)
1.4.1 Explanatory models
38(7)
1.4.2 The geomorphological system in deserts
45(7)
Part 2 Desert Surface Conditions
2.1 Introduction
52(2)
2.2 Weathering forms and mechanical weathering processes
54(18)
2.2.1 Weathering forms
54(7)
2.2.2 Mechanical weathering processes
61(11)
2.3 Desert soils and weathered mantles
72(48)
2.3.1 Factors of desert soil formation
73(5)
2.3.2 Soil profile development
78(42)
2.4 Particle concentration: stone pavements
120(9)
2.4.1 Pavement form and structure
120(4)
2.4.2 Processes of particle concentration
124(5)
2.5 Volume changes: patterned ground phenomena
129(21)
2.5.1 Wetting and drying phenomena
129(12)
2.5.2 Piping and subsidence phenomena
141(1)
2.5.3 Salt phenomena
142(5)
2.5.4 Other patterns
147(3)
Part 3 The Fluvial Landscape in Deserts
3.1 Desert drainage systems
150(22)
3.1.1 Nature of drainage systems
150(3)
3.1.2 Slopes
153(8)
3.1.3 Channels
161(11)
3.2 Mountains and plains: introduction
172(1)
3.3 Alluvial fan systems
173(15)
3.3.1 Definition and occurrence of alluvial fans
174(1)
3.3.2 Some morphometric characteristics of alluvial fans
175(7)
3.3.3 Processes and deposits
182(2)
3.3.4 Fan entrenchment
184(2)
3.3.5 Conclusion: age, rate and condition
186(2)
3.4 Pediment systems
188(27)
3.4.1 Critique and controversy
188(2)
3.4.2 Distribution of pediments
190(1)
3.4.3 Form of pediments
191(8)
3.4.4 Gamut of pediment processes
199(7)
3.4.5 Models of pediment development
206(9)
3.5 Playa systems
215(14)
3.5.1 Introduction
215(2)
3.5.2 Distinctiveness and classification
217(7)
3.5.3 Playa changes
224(5)
Part 4 Aeolian Bedforms
4.1 Introduction
229(7)
4.1.1 Preface
229(4)
4.1.2 Winds
233(3)
4.2 Wind erosion
236(19)
4.2.1 Wind erosion processes
236(9)
4.2.2 Wind abrasion, deflation and erosion phenomena
245(10)
4.3 Bedforms in loose granular material
255(73)
4.3.1 Sand movement by wind
255(12)
4.3.2 Two-dimensional characteristics of simple aeolian bedforms
267(16)
4.3.3 Dune patterns
283(39)
4.3.4 Ergs
322(3)
4.3.5 Dune patterns: concluding statement
325(3)
References 328(47)
Index 375