Searched for: subject:"Antarctica"
(1 - 20 of 31)

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Fricker, Helen Amanda (author), Arndt, Philipp (author), Brunt, Kelly M. (author), Datta, Rajashree Tri (author), Fair, Zachary (author), Jasinski, Michael F. (author), Kingslake, Jonathan (author), Magruder, Lori A. (author), Wouters, B. (author)
Surface melting occurs during summer on the Antarctic and Greenland ice sheets, but the volume of stored surface meltwater has been difficult to quantify due to a lack of accurate depth estimates. NASA's ICESat-2 laser altimeter brings a new capability: photons penetrate water and are reflected from both the water and the underlying ice; the...
journal article 2021
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van der Zalm, Geerten (author)
Meltwater features play an important role in the stability of the Antarctic ice shelves. They can destabilize ice shelves by exerting additional loading forces due to the weight of the water concentrated on one location. However, it is possible that developed meltwater networks transport water from an ice shelf into the ocean. In this way, they...
master thesis 2020
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van der Linden, S.J.A. (author)
Stable boundary layers (SBLs) are a common aspect of the earth’s atmosphere and are characterized by a stable density stratification in which the temperature increases with height. This typically occurs during the night, resulting in a short-lived stable boundary layer, or persistently throughout the polar winter, resulting in a longlived stable...
doctoral thesis 2020
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Tollenaar, Veronica (author)
Meteorites contain information on the formation and evolution of the Solar System. Antarctica is the most productive region for collecting meteorites, as the visually contrasting meteorites are easily detectable and tend to concentrate at specific areas exposing blue ice. Blue ice areas act as meteorite stranding surfaces (MSSs) if the flow of...
master thesis 2020
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Verschuur, Jasper (author), Le Bars, Dewi (author), Katsman, C.A. (author), de Vries, S. (author), Ranasinghe, Roshanka (author), Drijfhout, Sybren S. (author), Aarninkhof, S.G.J. (author)
Sea-level rise (SLR) can amplify the episodic erosion from storms and drive chronic erosion on sandy shorelines, threatening many coastal communities. One of the major uncertainties in SLR projections is the potential rapid disintegration of large fractions of the Antarctic ice sheet (AIS). Quantifying this uncertainty is essential to support...
journal article 2020
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Couvreux, Fleur (author), Bazile, Eric (author), Rodier, Quentin (author), Maronga, Björn (author), Matheou, Georgios (author), Chinita, Maria J. (author), Edwards, John (author), van Stratum, Bart J.H. (author), van Heerwaarden, Chiel C. (author), Huang, Jing (author), Moene, Arnold F. (author), Cheng, Anning (author), Fuka, Vladimir (author), Basu, S. (author), Bou-Zeid, Elie (author), Canut, Guylaine (author), Vignon, Etienne (author)
In polar regions, where the boundary layer is often stably stratified, atmospheric models produce large biases depending on the boundary-layer parametrizations and the parametrization of the exchange of energy at the surface. This model intercomparison focuses on the very stable stratification encountered over the Antarctic Plateau in 2009. Here...
journal article 2020
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Gossart, Alexandra (author), Palm, Stephen P. (author), Souverijns, Niels (author), Lenaerts, Jan T.M. (author), Gorodetskaya, Irina V. (author), Lhermitte, S.L.M. (author), van Lipzig, Nicole P.M. (author)
Continuous measurements of blowing snow are scarce, both in time and space. Satellites now provide the opportunity to derive blowing snow occurrences, transport and sublimation rates over Antarctica. These products are extremely valuable and offer a continental-wide assessment of blowing snow, which is an important but unknown component of...
journal article 2020
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Lhermitte, S.L.M. (author), Sun, Sainan (author), Shuman, Christopher (author), Wouters, B. (author), Pattyn, Frank (author), Wuite, Jan (author), Berthier, Etienne (author), Nagler, Thomas (author)
Pine Island Glacier and Thwaites Glacier in the Amundsen Sea Embayment are among the fastest changing outlet glaciers in West Antarctica with large consequences for global sea level. Yet, assessing how much and how fast both glaciers will weaken if these changes continue remains a major uncertainty as many of the processes that control their...
journal article 2020
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Pappa, F. (author), Ebbing, J. (author), Ferraccioli, F. (author), van der Wal, W. (author)
In this study we combine seismological and petrological models with satellite gravity gradient data to obtain the thermal and compositional structure of the Antarctic lithosphere. Our results indicate that Antarctica is largely in isostatic equilibrium, although notable anomalies exist. A new Antarctic Moho depth map is derived that fits the...
journal article 2019
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Izeboud, Maaike (author)
An accurate prediction of global sea-level rise requires that the cause of recent and intensifying glacier acceleration along the Antarctic ice sheet (AIS) coastal margins is understood. Ice shelf thinning and abrupt ice shelf collapse have been linked to surface melt that is prevalent across coastal Antarctica. Primarily, surface melt is...
master thesis 2019
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Sambell, K.A.M. (author), Smets, P.S.M. (author), Simons, D.G. (author), Snellen, M. (author), Evers, L.G. (author)
Continuous long-term sound sources are recorded at hydroacoustic station H03S, a threeelement hydrophone array south of Robinson Crusoe Island between 2014 April 23 and 2017 August 20. The origin of the signal between 3 and 20 Hz is investigated by using cross-correlation, array processing using plane wave beamforming and spectral analysis....
journal article 2019
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Lenaerts, J.T.M. (author), Medley, Brooke (author), van den Broeke, Michiel R. (author), Wouters, B. (author)
Surface mass balance (SMB) provides mass input to the surface of the Antarctic and Greenland Ice Sheets and therefore comprises an important control on ice sheet mass balance and resulting contribution to global sea level change. As ice sheet SMB varies highly across multiple scales of space (meters to hundreds of kilometers) and time (hourly...
journal article 2019
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Bamber, Jonathan L. (author), Oppenheimer, Michael (author), Kopp, Robert E. (author), Aspinall, Willy P. (author), Cooke, R.M. (author)
Despite considerable advances in process understanding, numerical modeling, and the observational record of ice sheet contributions to global mean sea-level rise (SLR) since the Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change, severe limitations remain in the predictive capability of ice sheet models. As a...
journal article 2019
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Groh, Andreas (author), Horwath, Martin (author), Horvath, Alexander (author), Meister, Rakia (author), Wouters, B. (author), Ditmar, P.G. (author), Ran, J. (author), Klees, R. (author), Schrama, Ernst (author)
Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have been used in a wide range of studies to generate Gravimetric Mass Balance (GMB) products. Results from...
journal article 2019
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Verschuur, Jasper (author)
Sandy beaches comprise large parts of the world's shorelines and act as a natural buffer for many exposed people and assets that are concentrated in the coastal zone. Many coastal communities are vulnerable to the impact of sea-level rise (SLR) that can amplify the episodic erosion from storms and drive structural erosion. The way communities...
master thesis 2018
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Nield, Grace A. (author), Whitehouse, Pippa L. (author), van der Wal, W. (author), Blank, Bas (author), O'Donnell, John Paul (author), Stuart, Graham W. (author)
Differences in predictions of Glacial Isostatic Adjustment (GIA) for Antarctica persist due to uncertainties in deglacial history and Earth rheology. The Earth models adopted in many GIA studies are defined by parameters that vary in the radial direction only and represent a global average Earth structure (referred to as 1-D Earth models)....
journal article 2018
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Li, Weiran (author)
Climate change has been a heated topic in recent years, and the mass loss of ice sheets is one aspect of it. The Antarctic Ice Sheet has experienced certain mass loss in the form of ice-shelf collapse and (sub-)surface melting, but thorough study remains limited due to the remote location of the continent. Therefore, remote sensing is expected...
master thesis 2018
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op 't Landt, Mark (author)
The Netherlands is a low-lying delta and therefore prone to flooding. After the flood in 1953, the Delta Committee was established which commenced the Delta Works to enhance water safety for the society and economy. The Maeslant Barrier and Eastern Scheldt Barrier are the largest and most technologically advanced flood defences which are part of...
master thesis 2018
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Michailidou, Egli (author)
Recent studies have shown that processes like the thinning of the ice shelves, the acceleration of the outlet glaciers and the collapses of the ice shelves are connected to surface melting. Several ice shelves at the Antarctic Peninsula, a region that has experienced an atmospheric warming much larger than the global average, have retreated and...
master thesis 2018
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Engels, Olga (author), Gunter, B.C. (author), Riva, R.E.M. (author), Klees, R. (author)
To fully exploit data from the Gravity Recovery and Climate Experiment (GRACE), we separate geophysical signals observed by GRACE in Antarctica by deriving high-spatial resolution maps for present-day glacial isostatic adjustment (GIA) and ice-mass changes with the least possible noise level. For this, we simultaneously (i) improve the...
journal article 2018
Searched for: subject:"Antarctica"
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