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Rozprawy doktorskie na temat „Debris morphology”

Autor: Grafiati
Data publikacji: 6 września 2023

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1

Gardner, David John. "Hypervelocity impact morphology." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294316.

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Wilson, Jessica. "The Efficacy and Design of Coastal Protection Using Large Woody Debris." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41573.

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Those who frequent the coastline may be accustomed to seeing driftwood washed onshore, some of it having seemingly found a home there for many years, others having been freshly deposited during the last set of storms; However, if a passerby were to take a closer look at the driftwood on the coastline, they may notice that some of these logs – also known as Large Woody Debris (LWD) – are anchored in place, a practice which is generally used for the purpose of stabilizing the shoreline or reducing wave-induced flooding. Records of existing anchored LWD project sites date back to 1997 and anecdo
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Penserini, Brian. "Debris Flow Network Morphology and a New Erosion Rate Proxy for Steepland Basins with Application to the Oregon Coast Range and Cascadia Subduction Zone." Thesis, University of Oregon, 2015. http://hdl.handle.net/1794/19276.

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Reaches dominated by debris flow scour and incision tend to greatly influence landscape form in steepland basins. Debris flow networks, despite their ubiquity, have not been exploited to develop erosion rate proxies. To bridge this gap, I applied a proposed empirical function that describes the variation of valley slope with drainage area in fluvial and debris flow reaches of steepland channel networks in the Oregon Coast Range. I calibrated a relationship between profile concavity and erosion rate to map spatial patterns of long-term uplift rates assuming steady state. I also estimated the ma
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Illgner, Peter Mark. "The morphology and sedimentology of two unconsolidated quaternary debris slope deposits in the Alexandria district, Cape Province." Thesis, Rhodes University, 1995. http://hdl.handle.net/10962/d1005519.

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Research on hillslope surface processes and hillslope stratigraphy has been neglected in southern Africa. The amount of published literature on hillslope stratigraphy in southern Africa is very limited. Hillslope sediments provide a record of past environmental conditions and may be especially useful in calculating the recurrence interval of extreme environmental conditions such as earthquakes and intense rainfall events. The characteristics of hillslope sediments provide information as to their origin, transport and mechanisms of deposition. No published work could be found that had been unde
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5

Diefenderfer, Heida Lin. "Channel morphology and restoration of Sitka spruce (Picea stichensis) tidal forested wetlands, Columbia River, U.S.A. /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5565.

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Gartner, Joseph E. "Relations between wildfire related debris-flow volumes and basin morphology, burn severity, material properties and triggering storm rainfall." Diss., Connect to online resource, 2005. http://wwwlib.umi.com/cr/colorado/fullcit?p1430198.

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7

Clark, Chase. "THE IMPACTS OF LOGGING WITH CURRENT AND MODIFIED BEST MANAGEMENT PRACTICES ON WATERSHED CHARACTERISTICS IN EASTERN KENTUCKY." UKnowledge, 2015. http://uknowledge.uky.edu/forestry_etds/25.

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In Kentucky, Best Management Practices (BMPs) were developed to protect the integrity of water resources during and after silvicultural operations, but their effectiveness is largely unknown. The study objectives were to (1) quantify the extent to which current BMPs minimized logging-related changes in stream water quality, channel morphology, and the content of woody debris and (2) quantify the extent to which modified BMPs influenced these characteristics. Six watersheds in eastern Kentucky were commercially logged in 2008-2009. In each watershed, one of three treatments was implemented (eac
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8

Pecorari, Eliana. "Il materiale legnoso in corsi d'acqua a canali intrecciati: volumi, mobilità , degradazione ed influenza morfologica." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425189.

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Natural wood in rivers has received wider attention in the scientific community only over the past two decades from different perspectives (biological, geomorphological and engineering). Wood has been studied mostly in mountain basins whereas large rivers have been less investigated. The present research deals with different aspects related to in-channel wood in gravel bed rivers, including physical wood characteristics, wood storage and transport, and link between wood abundance and river morphology. The analysis of physical characteristics of wood was carried out in three rivers: the Piave
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9

Binda, Andrey Luis. "A influência de detritos lenhosos na morfologia e na sedimentologia de leito no rio Guabiroba, Guarapuava - Pr." Universidade Estadual do Oeste do Parana, 2009. http://tede.unioeste.br:8080/tede/handle/tede/86.

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Made available in DSpace on 2017-05-12T14:42:26Z (GMT). No. of bitstreams: 1 Andrey Luis Binda.pdf: 3846554 bytes, checksum: bff1c6b39e4b9f07d3cbffa410b26168 (MD5) Previous issue date: 2009-07-24<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Trees, twigs and leaves fallen inside of the channel, form a significant component of the fluvial environment and natural occurrence in fluvial systems that cut forested areas. All these vegetal materials that are found inside of the channel are called wood debris. The wood debris play a key function in the ecology and geomorphology o
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10

Koulinski, Vincent. "Etude de la formation d'un lit torrentiel par confrontation d'essais sur modèle réduit et d'observations de terrain." Grenoble 1, 1993. http://www.theses.fr/1993GRE10211.

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L'etude locale du charriage torrentiel sur modele reduit de tres faible taille a montre que deux phenomenes nettement distincts cohabitent. D'une part, le charriage hyperconcentre correspond a un controle du transport solide et du lit par les conditions hydrauliques, le debit solide est tres importants et les grains sont d'autant plus facilement transportes qu'ils ont gros. D'autre part, lors du charriage ordinaire, la fourniture de materiaux par le lit est preponderante, les elements fins sont les plus mobiles et le debit solide varie dans des proportions importantes pour des conditions hydra
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11

Paguican, Engielle Mae. "La structure, morphologie, et texture superficielle des dépôts d'avalanche de débris : cartographie de terrain, par télédétection et par modélisation analogique." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00794267.

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Les effondrements de flanc déclenchent de larges avalanches de débris et glissements de terrain, provoquant ainsi une modification de la pente du volcan et altérant le paysage. Les différents types de volcans subissent des effondrements de flanc lors de leur développement. Aux Philippines, par exemple, les volcans présentant des brèches sont les cônes, sub-cônes et volcans massifs. Les avalanches de débris affectent les édifices volcaniques et non-volcaniques ; leur étude constitue donc un enjeu primordial pour l'évaluation des risques naturels. Les dépôts d'avalanche de débris (DAD) présenten
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12

Robison, E. George. "Large woody debris and channel morphology of undisturbed streams in southeast Alaska /." 1987. http://hdl.handle.net/1957/9757.

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13

Huang, Chien-Lin, and 黃建霖. "Debris Fan Morphology Measured in the Lab and Field Using Digital Photogrammetry." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/12820944634197382007.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>102<br>The aim of this thesis is to investigate the morphology of debris fan by conduct a field survey in Pu-Tun-Pu-Nas River debris fan of Laonong River and experiment observation with the Photogrammetry survey method. Aerial UAV Photogrammetry survey with ground controlled marker target can bring high quality digital surface model in a parity cost. Designed mirror array build in laboratory can provide stereo images for reconstruct experiment debris fan topography. Two experiment conditions are adopted to simulate fluvial fan and mudflow formed composition pattern.
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14

Chen, Chia-Huang, and 陳佳璜. "The Influence of Large Wood Debris Movement on River Morphology in a Flume Experiment." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/76974205558958218404.

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碩士<br>國立中興大學<br>水土保持學系所<br>97<br>The typhoons induce disasters of landslides and debris flow, bringing amount of large woody debris (LWD) which blocked the river and affected the flood expellant, and water supply in Taiwan. According to above results, the government has focused on the problem of LWD seriously. There are three main functions for LWD in a river: (1) To intercept the sediment on the river bed. (2) To block and separate the water flow. (3) To stabilize the river bank and lessen the scour. Above all, this experiment conducts the scour depth and sediment export of channel river bed
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15

Hung, Chi-Yao, and 洪啟耀. "Relation between Debris Flow Rheology and Fan Deposit Morphology Investigated Using Small-scale Experiments." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/00688807484432710507.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>99<br>The aim of this thesis is to understand the relationship between rheology and morphology for debris flow going from a narrow valley to a fan. In micro-scale experiments, Kaolinite, black sand and water are mixed to represent debris flows of high viscosity. We change two parameters which are water content and the coarse particle content to observe variation in debris flow behavior due to changes in composition. To measure the fast flow and rapid deformation of the flow surface, a fast scan method using a high speed camera and rotating laser are developed. The r
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16

Chou, Chia-Hsien, and 周佳賢. "An Experimental Study of Single Large Woody Debris Structure on the Change of Channel Morphology." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/81189270173320739112.

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碩士<br>逢甲大學<br>水利工程所<br>93<br>Even the flow deflector structures are useful on controlling channel banks erosion, the safety and its stability of the non-concrete deflector constructed by natural materials are still the major concerns for engineers and residents in Taiwan. Focused on the single flow deflector made of woody debris, this study tries to find the better structure configuration for considering the needs in structure safety, erosion control, and habitat enhancement through model experiments on concrete groyne, deflector log, and large woody debris. The flume experiments are underta
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17

Morris, Christopher M. "The impact of historic logging on woody debris distribution and stream morphology in the Great Smoky Mountains National Park, North Carolina-Tennessee." 2008. http://etd.utk.edu/2008/MorrisChris.pdf.

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18

Křížová, Lenka. "Exoskopický standard sedimentů glacigenních akumulačních forem reliéfu." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-295906.

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This thesis looks at the comparison between grain micromorphology of moraines, debris flows and similar accumulations. Moraine samples were taken in the Černé jezero Lake area, Bohemian Forest, in the Velická dolina Valley, High Tatras, and in the Labský důl Valley, Krkonoše Mts. Samples of debris flows and unverified accumulations were taken in the Důl Bílého Labe Valley, Krkonoše Mts., and further samples of accumulations were obtained from the valley of Prudký potok Stream, Králický Sněžník Mts., the valley of Vražedný potok Stream and Velká Kotlina, Hrubý Jeseník Mts. Sediments were examin
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