Huvudsakliga översättningar. Engelska, Svenska. drumlin nnoun: Refers to person, place, thing, quality, etc. (elongated mound of glacial debris) (geografi)
Drumlins are hills of sediment (generally a quarter of a mile or more in length) that have been streamlined by glacier flow. Thus, they are often elongated. They often occur together in fields, some with as many as several thousand individuals.
Although the process that forms drumlins is not fully understood, their shape implies that they are products of the plastic deformation zone of ancient glaciers. Drumlin, smooth, half egg-shaped or ellipsoidal hill which formed beneath Quaternary GLACIERS. Drumlins [Gaelic druim, "hill"] were first described in Ireland. They lie parallel to the direction of ice movement, the blunt (stoss) end facing up-glacier, the lee sloping down-glacier.
In: Glacial deposits in. North-West Europe (ed. J. Ehlers). A. A. Balkema Definition av drumlin. An elongated hill or ridge of glacial drift.
Mass Audubon's Drumlin Farm Wildlife Sanctuary, 208 S. Great Rd., Glacier Rock Farms (GRF) is situated across a glacial drumlin along the banks of the
Many drumlins, like much of the post-glacial landscape, are littered with countless rocks, 90 percent of them dropped within a mile of where the glacier picked them up. Robert Frost didn't exactly say, "Good piles of glacial boulders make good neighbors," but that, technically, was his allusion, and early farmers used these boulders to make the stone fences still prevalent in the region.
Drumlins and drumlin swarms are glacial landforms composed primarily of glacial till. They form near the margin of glacial systems, and within zones of fast flow deep within ice sheets , and are commonly found with other major glacially-formed features (including tunnel valleys , eskers , scours, and exposed bedrock erosion ).
The recent retreat of a marginal outlet glacier of Hofsjökull in Iceland provided the opportunity for direct study of a drumlin field with formation of more than 50 drumlins ranging from 90 to 320 m (300–1,050 ft) in length, 30 to 105 m (98–344 ft) in width, and 5 to 10 m (16–33 ft) in height. This aerial (courtesy of Dr William Bowen, California Geographical Survey Northridge, California) shows the Eureka Drumlin field in the USA and the Tobacco Plains Drumlins in Canada. A glacier flowed southward through this valley during the last ice age, advancing as far as Polson (about 90 miles from Eureka).
Drumlin, oval eller långsträckt kulle som tros ha bildats av den strömlinjeformade rörelsen av glaciärark över bergskräp eller till.
9 år bröllop
n."" (Glacial driva) trumma Moränrygg, bredd 30--125 m. Drumlin eller liknande, bredd >125 m Underliggande lager av glacial grovsilt--finsand.
glacial activity. Drumlins, eskers, kettle lakes, kames, ground and end moraines, and other glacial features are evident throughout the entire area. A particularly striking area is the long “ridge” (known as a kettle interlobate moraine) that formed between the Green Bay and Lake Michigan lobes during the Wisconsin Glaciation.
Jullan
Drumlin eller liknande, bredd 30--125 m. Drumlin eller liknande Glacial grovlera. Glacial silt. Glacial grovsilt--finsand, Glacial grovsilt--finsand. Isälvssediment.
Drumlin farm is a farm in Lincoln, which is named for the large hill or drumlin it is built on. Drumlins, like the rest of the features in this project, are a direct cause of glacial retreat. This feature is formed when a retreating glacier bulldozes till into a small hill. Here we present a new geomorphological map of the active drumlin field and the forefield of Millajokull, a surgetype outlet glacier, Iceland. The map is based on aerial photographs taken in 1995 and LiDAR data recorded in 2008. Mapping was done using ArcGIS 10 software on orthorectified imagery, LiDAR data and digital elevation models. The mapped landforms were initially identified on the Drumlins are elongated, aligned hills that form hidden from view beneath glaciers.
12 May 2017 moraines and perhaps especially drumlins, and how they were formed. Although fully ice-covered drumlins are being shaped by the current glacier regime. We test stress and drumlin formation beneath the glacier margi
Some evidence suggests that drumlins form as a result of direct deposition of till, and that the glacier tends to mold these features into 14 Feb 2019 Drumlins, sedimentary rock formations made by fast-moving ice flows in Namibia. Credit. The key piece of evidence came in the form of lacerated Namibian hills formed long ago by the migration of glaciers and icy rivers. The drumlin field and the geomorphology of the Múlajökull surge-type glacier, central Iceland. Artikel i vetenskaplig tidskrift, refereegranskad.
They can be up to 2 kilometers (1.25 miles) long.