Hidroloxía

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

F

Firn

www.wissen.de

Firn althochdeutsch firni, "vorjährig, alt" der mehrjährige Schnee des Hochgebirges, durch Tauen, Wiedergefrieren und Druck des Neuschnees körnig, dicht und luftarm geworden. Die Firnkörner werden allmählich immer größer und verdrängen die eingeschlossene Luft; es entsteht das Firneis. Bei zunehmendem Druck entsteht das Gletschereis.

http://www.bartleby.com/61/14/F0141400.html

Firn NOUN Granular, partially consolidated snow that has passed through one summer melt season but is not yet glacial ice. Also called old snow. ETYMOLOGY German, from German dialectal, of last year, from Old High German firni, old.

http://www.harcourt.com/dictionary/def/3/9/5/5/3955500.html

Firn Hydrology. a loose, permeable, granular material that is over a year old, and which is transitional between snow and glacier ice.

http://www.secretsoftheice.org/scientific/firn.html

Firn is snow that is more than one year old. Because there is not any, or hardly any, melt at the traverse sites, the snow just keeps accumulating over the centuries.

G

Graupel

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Wahrig - Deutsches Wörterbuch: 'Grau·pel <f. 21; meist Pl.> kleines Hagelkorn [Erweiterung von Graupe]

http://www.bartleby.com/61/85/G0238500.html

Graupel NOUN See snow pellet. ETYMOLOGY German Graupel, diminutive of Graupe, hulled grain, probably of Slavic origin; akin to Russian krupa, groats.

http://www.essc.psu.edu/~dbabb/Chapter_12/ice2.html

Transition from Rimed Dendrite (left) to Conical Graupel (right)

N

Neritisch

www.wissen.de

Neritisch den Flachseebereich bis zu einer Tiefe von 200 m betreffend.

http://www.bartleby.com/61/37/N0063700.html

Neritic ADJECTIVE Of, relating to, or inhabiting the ocean waters between the low tide mark and a depth of about a hundred fathoms (200 meters): neritic plankton. ETYMOLOGY German neritisch, perhaps ultimately from Nereus, Nereus.

http://www.aptoshs.pv.k12.ca.us/~agoldenk/students/AP%20students/Biomes/Matt/

The Neritic Zone consists of all ocean water above 300 meters. It excludes the intertidal zone and all ocean water below 300 meters. It is within the photic zone, meaning light reaches its depths. The organisms that live in it take advantage of this, so we find autotrophic kelp and other species.

T

Talweg

www.wissen.de

Talweg Verbindung der am tiefsten eingeschnittenen Punkte in den Querschnitten eines Flussbetts. Der Talweg liegt in Krümmungen im Außenbogen. Bei Gegenkrümmungen wechselt der Talweg von der einen Seite zur anderen. Im Interesse der Schiffahrt soll der Wechsel möglichst stetig erfolgen.

http://www.bartleby.com/61/10/T0141050.html

Thalweg NOUN Geology 1. The line defining the lowest points along the length of a river bed or valley. 2. A subterranean stream. ETYMOLOGY German : Tal, Thal, valley (from Middle High German tal, from Old High German) + Weg, way (from Middle High German wec, weg, from Old High German weg; see wegh- in Appendix I).

http://www.harcourt.com/dictionary/def/1/0/3/0/10308800.html

Thalweg Hydrology. 1. a line joining the lowest points along the entire length of a streambed or valley, whether or not the bed or valley lies underwater. Also, VALLEY LINE.a line joining the lowest points along the entire length of a streambed or valley, whether or not the bed or valley lies underwater. Also, VALLEY LINE. 2. a subsurface groundwater stream that percolates under the surface and in the same general direction as the surface stream.a subsurface groundwater stream that percolates under the surface and in the same general direction as the surface stream. Geology. a line representing the profile of a land surface that crosses all contour lines at right angles. Geography. the midpoint in the navigable channel of a waterway serving as a boundary between states. Also, TALWEG. (From a German phrase meaning "valley way.")

http://www.geogr.uni-jena.de/~cub/jb1994eng.html

Most of the sediment mobilized by soil erosion is derived from small drainageways on the fields where overland flow and interflow or returnflow concentrates and triggers ephemeral gully erosion or thalweg erosion, respectively.