Results 91 to 100 of about 2,262,975 (282)

Repeated surging and rapid retreat of a tidewater glacier in Scotland (Younger Dryas/Greenland Stadial 1)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT This paper presents evidence of glacier surging in the British landform record. We use new high‐resolution multibeam‐echosounder bathymetry data to map the submarine geomorphology of a former tidewater glacier that drained the Skye Icefield, NW Scotland, during the Younger Dryas Stadial (Greenland Stadial 1) ca. 12.9–11.7 ka.
Tom Bradwell, Douglas I. Benn
wiley   +1 more source

Appropriate terminology for karst-like phenomena: the problem with ‘pseudokarst’

open access: yesInternational Journal of Speleology, 2013
The practice of referring to certain morphologically karst-like phenomena as ‘pseudokarst’ is problematic, because it ignores basic principles of sound classification, logical naming conventions and accepted geomorphic classifications and terminology ...
Eberhard Rolan, Sharples Chris
doaj   +1 more source

Knowledge distillation with Segment Anything (SAM) model for Planetary Geological Mapping [PDF]

open access: yesarXiv, 2023
Planetary science research involves analysing vast amounts of remote sensing data, which are often costly and time-consuming to annotate and process. One of the essential tasks in this field is geological mapping, which requires identifying and outlining regions of interest in planetary images, including geological features and landforms.
arxiv  

The lowermost last‐glacial equilibrium line altitude in the Taiwanese Central Mountain Range and its implications for the palaeoclimate and the tropospheric moisture transport in East Asia

open access: yesJournal of Quaternary Science, EarlyView.
Abstract The high mountains of Taiwan provide a unique location for Quaternary palaeoclimate research in East Asia and the north‐western Pacific. This study applies geomorphological field mapping and rock surface exposure dating with paired (10Be/26Al) in situ‐produced terrestrial cosmogenic nuclides to identify and date glacial landforms and boulders ...
Robert Hebenstreit   +2 more
wiley   +1 more source

Multiscale Landforms Classification Based on UAV Datasets

open access: yesSustainability in Environment, 2018
<p><em>The advance uses of Unmanned Aerial Vehicles (UAV) in geosciences by producing very high spatial resolution Digital Surface Models (DSMs), the various UAV flight altitudes led to different scales DSM. In this paper, we analyzed terrain forms using Topographic Position Index (TPI), landforms extracted by Iwahashi and Pike method and ...
openaire   +3 more sources

Neighborhood contextual merging of segments for landform detection and classification

open access: yes, 2023
Contextual merging of segments using spatial relations of the neighborhood and the geomorphometric variable of the neighbor segments is introduced as a method to improve the over-segmentation of object-based analysis. The scope of the approach is to provide better candidates for the detection and delineation of landforms with simple geomorphometric ...
openaire   +2 more sources

Automated Landform Classification of China Based on Hammond’s Method

open access: yesJournal of Computer and Communications, 2020
The automatic classification of Macro landforms was processed with the program developed by Hammond’s Manual procedures, which based on properties of slope, local relief, and profile type, which consists of 5 landform types, 24 landform class and 96 landform subclasses.
openaire   +3 more sources

High-Fidelity Inhomogeneous Ground Clutter Simulation of Airborne Phased Array PD Radar Aided by Digital Elevation Model and Digital Land Classification Data

open access: yesSensors, 2018
This paper presents a high-fidelity inhomogeneous ground clutter simulation method for airborne phased array Pulse Doppler (PD) radar aided by a digital elevation model (DEM) and digital land classification data (DLCD).
Hai Li, Jie Wang, Yi Fan, Jungong Han
doaj   +1 more source

Symbolic landforms created by ancient earthworks near Lake Titicaca [PDF]

open access: yesarXiv, 2010
Interesting landforms created by an ancient network of earthworks are shown, using Google satellite imagery enhanced by an image processing. This network covers a large part of the land near the Titicaca Lake. Satellite images clearly display the slopes of hills criss-crossed with terrace walls and the surfaces of the plains covered with raised fields,
arxiv  

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