3,420 research outputs found
Torrent erosion in Lake District mountain catchments.
No full textThis thesis investigates torrent erosion in Lake District mountain catchments,Northern England. A nested research approach was used. Detailed investigations were undertaken at two case study sites (Iron Crag, Raise Beck) together with a survey of torrents across the Skiddaw and Helvellyn massifs.
At Iron Crag an annual sediment budget was constructed by monitoring hillslope,channel and fan processes. Particle size characteristics of sediments, and the history of fan development were investigated. Results show channel and bank sediments are the main source of material supplied to the fan. Large rainfall events cause significant change in the channel, banks and fan. The impact of different meteorological conditions on sediment characteristics is complex, however a seasonal cycle of sediment production (winter) and exhaustion (autumn) exists.
Historically, initial fan aggradation predates 36 BC, but a rapid phase of deposition began between 1200-1400 AD. Investigations at Raise Beck focussed on a flood that occurred in January 1995 and caused channel avulsion and shallow landsliding. This was reconstructed using a range of geomorphological and sedimentological evidence. Palaeohydrological methods give a discharge between 27- 74 in s-1. whereas as rainfall-runoff values range between 4-6 m3 s-1. The magnitude of the 1995 flood was smaller than two 19th Century events, but would still exceed the capacity of contemporary engineered channels.
The regional survey considered the characteristics and importance of torrents,mountain streams, and debris flows; and provided a context for work at the case
study sites. The case study sites are distinct members of the regional populations. Raise Beck being the largest (133 ha) and highest (858 m O. D. ); Iron Crag amongst
the smallest (2.4 ha) and lowest (600 m O. D. ). Overall, torrents and hillslope debris flows are minor components of the landscape (aerially 2.1 % Helvellyn massif, 0.4
% Skiddaw massif). Sites are preferentially located in regard to altitude and slope.Debris flows are related to geological type. Large torrent floods are relatively rare
and can be broadly related to regional flood episodes. Contemporary debris flow activity is of low magnitude and frequency
Parachiloglanis bhutanensis, a new species of torrent catfish (Siluriformes: Sisoridae) from Bhutan
No full textThoni, R. J., Gurung, D. B. (2014): Parachiloglanis bhutanensis, a new species of torrent catfish (Siluriformes: Sisoridae) from Bhutan. Zootaxa 3869 (3): 306-312, DOI: 10.11646/zootaxa.3869.3.
Notes. La música tradicional valenciana
No full textEn el número 41 de la revista L'Espill trobaràs un dossier monogràfic sobre "Capitalisme sense alternatives?", amb contribucions de Josep Fontana, Salvador Giner, Monica Frassoni, Miren Etxezarreta i Federico Mayor Zaragoza. A més, articles d'Eric J. Hobsbawm, Brian McGuiness, Antoni Espasa, Josep J. Sanmartín, Maria Àngels Viladot Presas, Aleš Debeljak, Xisca Homar Borràs i Vicent Minguet, així com documents de Julius Petersen i notes de Vicent Torrent i Faust Ripoll
Auditoria energética de alumbrado público del municipio de Torrent
No full textProyecto Confidencial (Riunet)Cercos Vicente, J. (2013). Auditoria energética de alumbrado público del municipio de Torrent. https://riunet.upv.es/handle/10251/28106.Archivo delegad
Magnetic enhancement is linked to and precedes hematite formation in aerobic soil
No full textSoil formation usually increases magnetic susceptibility, most often by increasing the concentrations of magnetite and maghemite, which are two ferrimagnetic iron oxides. Here we provide evidence that magnetic enhancement in aerobic soils not affected by detrital magnetic inputs or thermal transformation of other iron oxides is mostly due to the formation of maghemite, which is later transformed into hematite—the iron oxide that gives red color to soil. We show that the maghemite/hematite ratio is influenced by the particular environment and the degree of soil development, so it constitutes an effective tool for paleoenvironmental and planetary studies
Film actress Greta Garbo in "Ibanez's Torrent."
No full textFilm actress Greta Garbo in "Ibanez's Torrent."To order a reproduction, inquire about permissions, or for information about prices see:
http://www.lib.washington.edu/specialcollections/services/reproduction/reproduction
Please cite the Order NumberScanned at 600ppi with an Epson 20000 flatbed scanner. Image then rotated, cropped, level-adjusted, and sharpened using Photoshop CS3. Converted to a JPEG2000 image upon ingest into CONTENTdm
Contrasting behavior of hematite and goethite within paleosol S5 of the Luochuan profile, Chinese Loess Plateau
No full textThe Chinese loess/paleosol sequence provides an excellent record of long-term variations in the East Asian paleomonsoon. For representative loess profiles, paleosol units have enhanced magnetic properties compared to loess units. However, at some depth intervals with special paleoenvironmental conditions, selective depletion of antiferromagnetic (AFM) minerals (hematite and goethite) could occur, resulting in complexities in accurately linking variations in magnetic properties to long-term fluctuations in paleoclimate. To resolve this problem, we directly measured the mass concentrations of these AFM minerals using second-order diffuse reflectance spectroscopy (DRS), and then correlated the DRS results to high-field isothermal remanent magnetization (HIRM) from paleosol unit S5 at the Luochuan profile, central Chinese Loess Plateau. Our results suggest that a low HIRM anomaly just below the sub-paleosol unit S5S1 is caused by fluctuations specifically in goethite content, while the hematite concentration exhibits a maximum over the same depth interval. This appears to rule out significant loss of hematite to reductive dissolution and further indicates that hematite and goethite may respond differently to changes in the paleoclimate condition
Improving P2P keyword search by combining .torrent metadata and user preference in a semantic overlay
No full textDeveloping a new similarity function for Tribler. Solution used a combination of item-item and user-user similarity, using metadata available in the .torrent files to reduce sparcity in dataset.Parallel and Distributed Systems groupElectrical Engineering, Mathematics and Computer Scienc
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