Results 81 to 90 of about 12,695 (270)

The relationship between land management and the nature of helophytes in small lakes (Eastern Poland)

open access: yesLimnological Review, 2016
The aim of this study was to determine the relationship between the development of rush zones in small lakes and the utilization and condition of surrounding lands. Generally, the width of the helophyte zone increased along shores with gentle slopes (>5˚)
Sender Joanna, Grabowski Magda
doaj   +1 more source

Volcanically induced glacier collapses in southern Jan Mayen (Sør‐Jan), Norway

open access: yesBoreas, EarlyView.
A formerly unknown glacier totally covered with tephra was found in an area of Jan Mayen where no Holocene glaciation was known. This glacier and three others in the same area melted abruptly creating jökulhlaups due to volcanic activity impacting the glacier catchments at different times in the Holocene.
Eiliv Larsen   +4 more
wiley   +1 more source

Ice-sheet scale distribution and morphometry of triangular-shaped hummocks (murtoos): a subglacial landform produced during rapid retreat of the Scandinavian Ice Sheet

open access: yesAnnals of Glaciology, 2019
High-resolution digital elevation models of Finland and Sweden based on LiDAR (Light Detection and Ranging) reveal subglacial landforms in great detail.
Antti E. K. Ojala   +7 more
doaj   +1 more source

Ribbed moraines formed during deglaciation of the Icelandic Ice Sheet: implications for ice‐stream dynamics

open access: yesBoreas, EarlyView.
This study focuses on the deglaciation dynamics in the northeastern sector of the Iceland Ice Sheet, by investigating transverse ridges, together with glacifluvial and ice‐marginal landforms. The main emphasis is on the transverse ridges, which are primarily interpreted as ribbed moraines – the first to be described in Iceland.
Nína Aradóttir   +5 more
wiley   +1 more source

De Geer moraine internal architecture based on sedimentological and geophysical investigations and implications for ice‐marginal reconstructions

open access: yesBoreas, EarlyView.
De Geer moraines may act as valuable ice‐marginal indicators; however, to date, their variable mode of formation has presented challenges for this utility. Here, we present sedimentological and ground penetrating radar data of DGMs located in southwest Finland.
Gwyneth E. Rivers   +5 more
wiley   +1 more source

An inventory of subglacial overdeepenings in southern Germany and Austria

open access: yesBoreas, EarlyView.
We present an inventory and morphometric characterization of >100 individual overdeepened basins in southern Germany and Austria compiled from heterogeneous sources. Arrangement and dimensions of overdeepenings are compared to those of their western Alpine counterparts, to catchment topographies and bedrock lithologies, and to modelled ice‐flow ...
Lukas Gegg   +5 more
wiley   +1 more source

The impact of the structural framework of the North German Basin on Pleistocene tunnel‐valley formation

open access: yesBoreas, EarlyView.
This study contains a comprehensive regional analysis of the orientations of tunnel valleys, faults and salt structures in the North German Basin, aiming to identify correlations that might indicate a structural control on tunnel‐valley formation. A structural control on tunnel‐valley formation has been repeatedly postulated and correlations have been ...
Jörg Lang   +5 more
wiley   +1 more source

Glacier-Bed Landforms of the Prairie Region of North America [PDF]

open access: bronze, 1979
Stephen R. Moran   +4 more
openalex   +1 more source

Lateglacial and Holocene glacier variations in an active volcanic area, northern Jan Mayen (Nord‐Jan), Norway

open access: yesBoreas, EarlyView.
Glacier evolution and environmental changes in the northern Jan‐Mayen from the early deglaciation and well into the Holocene are discussed. Results are based on a large chronological dataset (TCN and radiocarbon dates), integrated with field data on glacial landforms and sediments, including the use of GPR.
Astrid Lyså   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy