Erosion, debris flows and environment in mountain regions

proceedings of the International symposium held at Chengdu, China, 5-9 July, 1992...

Publisher: International Association of Hydrological Sciences in Wallingford, Oxforshire

Written in English
Published: Pages: 485 Downloads: 407
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  • Soil erosion -- Environmental aspects -- Congresses

Edition Notes

Statementedited by D.E. Walling, T.R. Davies, B. Hasholt.
SeriesIAHS publication -- no. 209
ContributionsDavies, Tim R., Hasholt, Bent., Walling, D. E., International Symposium on Erosion, Debris Flows and Environment in Mountain Regions (1992 : Chengdu, China)
LC ClassificationsQH545.S64 E76 1992
The Physical Object
Paginationx, 485 p. :
Number of Pages485
ID Numbers
Open LibraryOL21485733M
ISBN 100947571388

Flooding Processes and Environments on Alluvial Fans FORMATION AND NATURE OF ALLUVIAL FANS Alluvial fans develop where streams or debris flows emerge from steep reaches in which they are confined to relatively straight and narrow channels and flow into zones where sediment transport capacity decreases because of increases in channel width. Aug 01,  · Chapter 1: An Introduction to Mountains. Alton C. Byers, Larry W. Price and Martin F. Price. Most people are familiar with the importance of oceans and rainforests (Byers et al. ), thanks in part to the dozens of books, documentaries, programs, and internet sites developed by education and conservation groups over the past two decades. A year history of debris flows in north-central Washington State, U.S.A.: Preliminary results from trenching and surficial geologic mapping at the Pope Creek fan. Long-term records of the magnitude and frequency of debris flows on fans are rare, but such records provide critical information needed for debris-flow hazard and risk assessments. The committee also notes that the potential for erosion and deposition, the related uncertainty in flow path behavior, and the imprudence of elevation on fill as a mitigation measure are joint and separate characteristics shared among many flood hazards on depositional environments other than alluvial fans, although not usually with the same intensity.

A glacier that fills a valley is called a valley glacier, or alternatively an alpine glacier or mountain glacier. A large body of glacial ice astride a mountain, mountain range, or volcano is termed an ice cap or ice field. Ice caps have an area less than 50, km 2 (19, sq mi) by definition. Apr 24,  · These are quick-moving areas of dirt, rock and debris that have been saturated to the point where they can no longer defy gravity on a slope, hill or mountain. Mudslides are destructive, and some of the worst disasters in history have involved mudslides, many brought about by volcanic activity. to accommodate the tectonic force. In other words, mountains are lazy. The theory of work minimization predicts that the interaction between these three forces (tectonic, gravity and friction) will provide a critical mountain length to height aspect ratio that characterizes the mountain range at equilibrium. At equilibrium that is the magic. Commandeur PR () Soil erosion studies using rainfall simulation on forest harvested areas in British Columbia. In ‘Proceedings of the Chengdu Symposium: Erosion, Debris Flows and Environment in Mountain Regions’. International Association of Hydrological Sciences, 21–Cited by: 1.

A mudflow or mud flow is a form of mass wasting involving "very rapid to extremely rapid surging flow" of debris that has become partially or fully liquified by the addition of significant amounts of water to the source material.. Mudflows contain a significant proportion of clay, which makes them more fluid than debris flows; thus, they are able to travel farther and across lower slope angles. Damage to residential property and infrastructure downstream of the fires occurred in three cases. Most of the damaging events were debris flows, although several large debris floods occurred on lower gradient streams. At four of the fires, the events were triggered Cited by: delineate debris-flow dangers. In many cases, the USGS works with other agencies installing hazard-detection and warning systems, and developing means for communicat-ing hazards and warnings about volcanic eruptions and debris flows. During the eruption of Mount St. Helens, a . Dec 20,  · Before January's catastrophic debris flows in Montecito, the Army Corps of Engineers, state and local officials knew they needed to drastically beef up flood protection, but never Joe Mozingo.

Erosion, debris flows and environment in mountain regions Download PDF EPUB FB2

Proceedings of the International Symposium on Erosion, Debris Flows, and Environment in Mountain Regions. "Proceedings of the international symposium held at Chengdu, China, July The symposium was organized by the International Commission on Continental Erosion of the International Association of Hydrological Sciences [and others].".

Get this from a library. Erosion, debris flows and environment in mountain regions. [D E Walling; Timothy R H Davies; Bent Hasholt; IAHS International Commission on Continental Erosion.; Zhongguo ke xue yuan. Institute of Mountain Disasters and Environment.;]. Erosion, Debris Flows and Environment In Mountain Regions Edited by D.

WALLING Department of Geography, University of Exeter, Exeter EX4 4RJ, UK. Erosion and changes in the Erosion of river banks may be measured by inserting metal rods into the bank and marking the position of the bank surface along the rods at different times.

Thermal erosion is the result of melting and weakening permafrost due to moving water. It. This volume contains 55 papers from 25 countries.

The Symposium focussed on steepland and mountain environments with particular regard to debris flow and environmental degradation in areas debris flows and environment in mountain regions book the Pacific Rim.

Vegetation succession, soil degradation, land restoration, the measurement and prediction of soil erosion, the dynamics of debris flow and related phenomena, and slope protection. Although much of the available information on the European mountain environment relates to the Alps, Europe has a great variety of mountain regions, from Scandinavia to Mt.

Etna in Sicily and from the vast Spanish sierras to the densely wooded Carpathians. There is no standard definition of a mountain on the European scale, and national definitions vary considerably. Erosion, Debris Flows and Environment in Mountain Regions (Proceedings of the Chengdu Symposium, July ).

IAHS Publ.29 Erosion and sediment yield in mountain regions of the world A. DEDKOV & V. MOSZHERIN Kazan University, Lenin Str. 18, KazanUSSR Abstract A comparative assessment of erosion intensity in mountain.

Dedkov, AP. and Moszherin, V.l. () Erosion and sediment yield in mountain regions of the world In Erosion, Debris flows and Environment in Mountain Regions.

Cited by: 5. Debris flow hazards for mountain regions of Russia: regional features and key events the largest debris flows here had glacial reasons. In the Baikal debris flow province, the highest debris. Debris flows are accelerated downhill by gravity and tend to follow steep mountain channels that debouche onto alluvial fans or front, or 'head' of a debris-flow surge often contains an abundance of coarse material such as boulders and logs that impart a great deal of ascensionproducers.comng behind the high-friction flow head is a lower-friction, mostly liquefied flow body that.

May 01,  · Chapter 6: Weathering, Erosion, and Deposition Weathering. Weathering is what takes place when a body of rock is exposed to the “weather” — in other words, to the forces and conditions that exist at Earth’s surface.

Except for volcanic rocks and some sedimentary rocks, most rocks are formed at some depth within the R. Adam Dastrup, Ma, Gisp. In: Erosion, Debris Flows, and Environment in Mountain Regions: Proceedings of the Chengdu Symposium, July (IAHS Publ.

International Association Cited by: and debris flows common because of abundant moisture. Soil formation in Arid Regions. Very slow because of the limited water and few plants; salts and calcium carbonate Wind erosion in Arid Regions.

Common because of limited water for grain cohesion and few plants to stabilize the land surface. Wind erosion in Humid Regions. Catastrophic Mass Flows in the Mountain Glacial Environment: Discussion. Global occurrence and climate change: as detailed above, CMFs in the glacial environment involve the mobilization of materials at high altitudes that include glacier ice and snow.

Thus, it seems self-evident that elements of climate change involving atmospheric Cited by: Mar 01,  · Wherever people gain their livelihood in mountains and steeplands, the productive capacity of the soils they use is likely to be affected by mass movement erosion.

The impacts of mass movement erosion on land productivity are significant but under-rated in the scientific by: The tectonic forces that lead to mountain building are continuously countered by erosion due to intensified precipitation, wind and temperature extremes.

These elements, aided by the force of gravity, are particularly powerful along the mountain ranges which form a barrier to the prevailing westerly winds that buffet New Zealand. Oct 10,  · Mountain streams, by definition, are surrounded by hillslopes that eventually supply them with sediment of all sizes, from clay to boulders, through slow (soil creeping, gullying) to fast transport processes (rock avalanches, rock falls, avalanches, debris flows, shallow and deep-seated landslides).

ICCE Publications Here is a list of the Red Books and Special Issues produced by ICCE members Books can be purchased online at the following website. Episodic debris flows scour the rock beds of many steepland valleys. Along recent debris-flow runout paths in the western United States, we have observed evidence for bedrock lowering, primarily by the impact of large particles entrained in debris flows.

This evidence may persist to the point at which debris-flow deposition occurs, commonly at slopes of less than??. DEBRIS FLOW AND EROSION CONTROL PROBLEMS CAUSED BY THE ASH ERUPTIONS OF IRAZfi VOLCANO, COSTA RICA By HOWARD H.

WALDRON ABSTRACT Irazu Volcano, in central Oosta Rica, erupted ash almost continuously from March through February The ash created and caused widespread damage to property, crops, and by: Modelling erosion and sediment yields. covers a wide variety of approaches for estimating sediment concentrations/fluxes in the absence of actual sample data.

The papers grouped under the theme of. Mountain hazards and debris flows. provide information on quantifying and modelling landslides and debris flows in different countries/environments. Two chapters are devoted to the particular characteristics of glaciation and vulcanism in mountain formation.

The book concludes with a discussion of the special problems that human use of mountain regions create, including engineering, natural hazards, soil. Three sets of remotely sensed data were used to measures the land use/land cover changes in Wadi Ziqlab catchment during the period Its population increased from in to in The population growth have resulted into changing the land use/land cover of ha (42%) of the catchment area.

The main changes show that orchard trees and urban areas increased by %. After a wildfire is extinguished, hazards and risks arise from potential flooding, erosion, debris flows, and infrastructure damage. Water supplies and infrastructure, if not damaged during the active fire period, can be at risk during subsequent postfire flood Daniel G.

Neary, Jackson M. Leonard. Chapter STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. Terms in this set () alluvial fan. a wedge shaped sediment deposit left where a tributary flows into a more slowly moving mountain stream or where a mountain stream flows into a dessert.

debris flows, and shallow soil slips. Davies TR., Phillips CJ., Pearce AJ. and Zhang XB. () Debris flow behaviour - an integrated overview. Erosion, debris flows and environment in mountain regions. Proc. international symposium, Chengdu, Phillips CJ.

and Davies TRH. () Determining rheological parameters of debris flow material. Geomorphology 4(2): ruggedness and inaccessibility of the mountain environment, have meant that relatively few studies have quantified mountain erosion earthflows, landslides, debris flows, rock falls, and glaciation (see good descriptions in Carson and Kirkby, ; Selby, ; Abrahams, Himalayan erosion 09/16/ PM.

Hillslope Processes Mountain. Even though rain falls infrequently in the desert, when it does rain large quantities of sediment move down slope and into canyons entrained in flash-flood waters or as debris flows.

A debris flow is a moving mass of rock fragments, mud, soil, and enough water to keep the mass fluid. Book Author(s): Ellen Wohl. Search for more papers by this author Mountain climatology and past and potential future climatic changes in mountain regions: a review, Mountain Research and M.

Bordas, and J. Silvestrini, Threshold of sediment deposition in medium stream power flow, in Erosion, debris flows and environment in mountain. A landslide is defined as the movement of a mass of rock, debris, or earth down a slope.

Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity. The term "landslide" encompasses five modes of slope movement: falls, topples, slides, spreads, and flows.

These are further subdivided by the type of. Refereed book chapters. (). Soil erosion and sediment fluxes in river basins: the influence of anthropogenic activities and climate change. O. (). Late Holocene sediment yields in small alpine and subalpine drainage basins, British Columbia.

In: Erosion, Debris Flows and Environment in Mountain Regions, edited by D.E. Walling, T.Mountain pass – Route through a mountain range or over a ridge Mountain range – A geographic area containing several geologically related mountains Nunatak – Exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier.INTERNATIONAL SYMPOSIUM ON EROSION, DEBRIS FLOWS, AND ENVIRONMENT IN MOUNTAIN REGIONS, CHENGDU, CHINA, JULY Meeting jointly organized by International Association of Hydrological Sciences and Institute of Mountain Disasters and Environment, Chinese Academy of Sciences.

Abstracts should be submitted by 1 January and completed.