Results 151 to 160 of about 79,260 (388)

Weichselian–Holocene glacial history of the Sjuøyane archipelago, northern Svalbard

Boreas, EarlyView.
To reconstruct the glacial history of Sjuøyane, we describe coastal sedimentary sections in Quaternary sediments and constrain their chronology by radiocarbon and optically stimulated luminescence ages. The sedimentary sections largely consist of shallow (glacio‐)marine and/or littoral sediments deposited during high relative sea levels.
Anders Schomacker, Helena Alexanderson, Wesley R. Farnsworth, Mark F. A. Furze, Sofia E. Kjellman, Nina Kirchner, Elias Strandell Erstorp, Riko Noormets, Vincent Jomelli, Ólafur Ingólfsson   +9 more
wiley   +1 more source

Contribution towards understanding the categorisation of landforms. [PDF]

, 2011
Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies.Categorisation in the geographic domain, including landform categorisation, is more subject to influence by cultural ...
Williams, Maia Charlotte
core  

Geoform and Landform Classification of Continental Shelves using Geospatially Integrated IKONOS Satellite Imagery

Journal of Coastal Research, 2016
Makowski, C.; Finkl, C.W., and Vollmer, H.M., 2017. Geoform and landform classification of continental shelves using geospatially integrated IKONOS satellite imagery.
C. Makowski, C. Finkl, Heather M. Vollmer   +2 more
semanticscholar   +1 more source

Automatic identification of streamlined subglacial bedforms using machine learning: an open‐source Python approach

Boreas, EarlyView.
Morphometric values of streamlined subglacial bedforms provide valuable information about the relative speed, direction, and maturity of past ice streams. This paper presents a new tool that utilizes a machine learning approach to automatically identify glacially derived streamlined features.
Ellianna Abrahams, Marion McKenzie, Fernando Pérez, Ryan Venturelli   +3 more
wiley   +1 more source

Relationship between regeneration of oriental beech (Fagus orientalis Lipsky) and land form [PDF]

تحقیقات جنگل و صنوبر ایران, 2005
This paper investigates the relationship between land form and location and natural regeneration of beech species. For this purpose, the beech communities over 100 m.
Seddigheh Mortezapour, Mohammad Reza Marvie-Mohadjer, Khosro Sagheb-Talebi, Ghavamoddin Zahedi Amiri   +3 more
doaj  

Investigating Asteroid Surface Geophysics with an Ultra-Low-Gravity Centrifuge in Low-Earth Orbit [PDF]

arXiv, 2019
Near-Earth small-body mission targets 162173 Ryugu, 101955 Bennu, and 25143 Itokawa produce gravity fields around 4 orders of magnitude below that of Earth and their irregular shapes, combined with rotational effects produce varying surface potentials.
arxiv  

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

Boreas, 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, Astrid Lyså, Asbjørn Hiksdal, Ulysses N. Ninnemann, Stefan Wastegård   +4 more
wiley   +1 more source

Preparation an Ecological Map Using Data from the Third Survey on National Environment [PDF]

Geo Data
In this study, we created a map to present the results of the third survey on national environment, following the ecological and natural map guidelines established by law. For the terrestrial areas of the Republic of Korea, we conducted three assessments,
Eui-Jeong Ko, Taeho Kang, Hye-Yeon Yoon
doaj   +1 more source

Identification of topographic elements composition based on landform boundaries from radar interferometry segmentation (preliminary study on digital landform mapping)

, 2016
Dense vegetation that covers most landscapes in Indonesia becomes a common limitation in mapping the landforms in tropical region. This paper aims to examine the use of radar interferometry for landform mapping in tropical region; to examine the ...
W. Widyatmanti, I. Wicaksono, P. Syam
semanticscholar   +1 more source

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

Boreas, 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, Ívar Örn Benediktsson, Erla Guðný Helgadóttir, Ólafur Ingólfsson, Skafti Brynjólfsson, Wesley R. Farnsworth   +5 more
wiley   +1 more source