Results 11 to 20 of about 518 (86)

GCD-DDPM: A Generative Change Detection Model Based on Difference-Feature-Guided DDPM [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2023
Deep learning (DL)-based methods have recently shown great promise in bitemporal change detection (CD). Existing discriminative methods based on convolutional neural networks (CNNs) and Transformers rely on discriminative representation learning for ...
Yihan Wen, Xianping Ma, Xiaokang Zhang, M. Pun   +3 more
semanticscholar   +1 more source

The Role of Bedload Transport in the Development of a Proglacial River Alluvial Fan (Case Study: Scott River, Southwest Svalbard)

Hydrology, 2021
This study, which was conducted between 2010 and 2013, presents the results of direct, continuous measurements of the bedload transport rate at the mouth section of the Scott River catchment (NW part of Wedel-Jarlsberg Land, Svalbard).
Waldemar Kociuba
doaj   +1 more source

Quantification of short‐term transformations of proglacial landforms in a temperate, debris‐charged glacial landsystem, Kvíárjökull, Iceland

Land Degradation &Development, Volume 34, Issue 17, Page 5566-5590, November 2023., 2023
Abstract Proglacial areas are dynamic landscapes and important indicators of geomorphic changes related to climate warming. Systematic and repeat surveys of landforms presently evolving on glacier forelands facilitate the quantification of rates of change and an improved understanding of the processes generating those changes.
Szymon Śledź, Marek W. Ewertowski, David J. A. Evans   +2 more
wiley   +1 more source

Constraints on the Timing and Extent of Deglacial Grounding Line Retreat in West Antarctica

AGU Advances, Volume 4, Issue 2, April 2023., 2023
Abstract Projections of Antarctica's contribution to future sea level rise are associated with significant uncertainty, in part because the observational record is too short to capture long‐term processes necessary to estimate ice mass changes over societally relevant timescales.
Ryan A. Venturelli, Brenna Boehman, Christina Davis, Jon R. Hawkings, Sarah E. Johnston, Chloe D. Gustafson, Alexander B. Michaud, Cyrille Mosbeux, Matthew R. Siegfried, Trista J. Vick‐Majors, Valier Galy, Robert G. M. Spencer, Sophie Warny, Brent C. Christner, Helen A. Fricker, David M. Harwood, Amy Leventer, John C. Priscu, Brad E. Rosenheim, SALSA Science Team   +19 more
wiley   +1 more source

Assessing DEM quality and minimizing registration error in repeated geomorphic surveys with multi‐temporal ground truths of invariant features: Application to a long‐term dataset of beach topography and nearshore bathymetry

Earth Surface Processes and Landforms, Volume 47, Issue 12, Page 2950-2971, 30 September 2022., 2022
The field site at Porsmilin and the method we developed for assessing DEM quality and minimizing registration error in repeated geomorphic surveys using a multi‐temporal ground truth of invariant features. In this example, the method is applied to 43 topographic DEMs collected using terrestrial laser‐scanning. Abstract Remotely sensed digital elevation
Stéphane Bertin, Marion Jaud, Christophe Delacourt   +2 more
wiley   +1 more source

A Short-Time Repeat TLS Survey to Estimate Rates of Glacier Retreat and Patterns of Forefield Development (Case Study: Scottbreen, SW Svalbard)

Resources, 2020
The study presents findings from comparative analyses of high-resolution differential digital elevation models (DEM of Difference—DoD) based on terrestrial laser scanning (TLS) surveys.
Waldemar Kociuba, Grzegorz Gajek, Łukasz Franczak   +2 more
doaj   +1 more source

Foredune responses to the impact of aggregate extraction in an arid aeolian sedimentary system

Earth Surface Processes and Landforms, Volume 47, Issue 11, Page 2709-2725, 15 September 2022., 2022
Responses in the aeolian sedimentary system affected by an historical aggregate extraction of El Médano (Tenerife, Spain) have been analysed. The methodology comprised two temporal scales: a long‐term evolution based on comparation of historical and current topographical sources, and a short‐term experiment to analyse the airflow dynamics, and the ...
Abel Sanromualdo‐Collado, Néstor Marrero‐Rodríguez, Leví García‐Romero, Irene Delgado‐Fernández, Manuel Viera‐Pérez, Antonio C. Domínguez‐Brito, Jorge Cabrera‐Gámez   +6 more
wiley   +1 more source

Disproportionate and chronic sediment delivery from a fluvially controlled, deep‐seated landslide in Aotearoa New Zealand

Earth Surface Processes and Landforms, Volume 47, Issue 8, Page 1972-1988, 30 June 2022., 2022
River erosion undermines the 80‐ha Rangitikei Landslide and affects the rate of landslide movement over flood event to seasonal timescales. The landslide transitions from sliding at 0.01 m per year at its head, to flowing at >10 m per year at its toe.
Samuel Thomas McColl, Charlotte Naomi Holdsworth, Ian Christopher Fuller, Malcolm Todd, Forrest Williams   +4 more
wiley   +1 more source

Does the topographic data source truly influence the routing modelling of debris flows in a torrent catchment?

Earth Surface Processes and Landforms, Volume 47, Issue 8, Page 2107-2129, 30 June 2022., 2022
Overall, despite the observed model sensitivity to the topographic data source, for the analysed channel reach, the recognized differences in the routing‐modelling outcomes can be regarded as negligible from a risk planning and management point of view, thus suggesting that the topographic data source does not truly represent a determining factor in ...
Mauro Boreggio, Martino Bernard, Carlo Gregoretti   +2 more
wiley   +1 more source

Channel Response and Reservoir Delta Evolution From Source to Sink Following an Extreme Flood

Journal of Geophysical Research: Earth Surface, Volume 127, Issue 2, February 2022., 2022
Abstract Disturbances such as floods, fires, and mass movements introduce large volumes of sediment into fluvial systems. Tracking the movement of disturbance‐generated sediment provides insight into the processes of fluvial system response. Few studies document a post‐disturbance response that explicitly links channel change to evolution of a ...
J. S. Eidmann, S. L. Rathburn, D. White, K. Huson   +3 more
wiley   +1 more source