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Poinelli, M. (author), Schodlok, Michael (author), Larour, Eric (author), Vizcaino, M. (author), Riva, R.E.M. (author)Land ice discharge from the Antarctic continent into the ocean is restrained by ice shelves, floating extensions of grounded ice that buttress the glacier outflow. The ongoing thinning of these ice shelves – largely due to enhanced melting at their base in response to global warming – is known to accelerate the release of glacier meltwater into...journal article 2023
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D’Acquisto, M. (author), Herman, M. W. (author), Riva, R.E.M. (author), Govers, R. (author)Greater landward velocities were recorded after six megathrust earthquakes in subduction zone regions adjacent to the ruptured portion. Previous explanations invoked either increased slip deficit accumulation or plate bending during postseismic relaxation, with different implications for seismic hazard. We investigate whether bending can be...journal article 2023
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Poinelli, M. (author), Nakayama, Y. (author), Larour, E. (author), Vizcaino, M. (author), Riva, R.E.M. (author)Iceberg A-68 separated from the Larsen C Ice Shelf in July 2017 and the impact of this event on the local ocean circulation has yet to be assessed. Here, we conduct numerical simulations of ocean dynamics near and below the ice shelf pre- and post-calving. Results agree with in situ and remote observations of the area as they indicate that...journal article 2023
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Machado Lima de Camargo, C. (author), Riva, R.E.M. (author), Hermans, T.H.J. (author), Schütt, Eike M. (author), Marcos, Marta (author), Hernandez-Carrasco, Ismael (author), Slangen, Aimée B.A. (author)Attribution of sea-level change to its different drivers is typically done using a sea-level budget approach. While the global mean sea-level budget is considered closed, closing the budget on a finer spatial scale is more complicated due to, for instance, limitations in our observational system and the spatial processes contributing to regional...journal article 2023
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Simons, W.J.F. (author), Broerse, D.B.T. (author), Kleptsova, O.S. (author), Nijholt, N. (author), Pietrzak, J.D. (author), Naeije, M.C. (author), Lhermitte, S.L.M. (author), Visser, P.N.A.M. (author), Riva, R.E.M. (author)A devastating tsunami struck Palu Bay in the wake of the 28 September 2018 M<sub>w</sub> = 7.5 Palu earthquake (Sulawesi, Indonesia). With a predominantly strike-slip mechanism, the question remains whether this unexpected tsunami was generated by the earthquake itself, or rather by earthquake-induced landslides. In this study we examine the...journal article 2022
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Machado Lima de Camargo, C. (author), Riva, R.E.M. (author), Hermans, T.H.J. (author), Slangen, Aimée B.A. (author)Ocean mass change is one of the main drivers of present-day sea-level change (SLC). Also known as barystatic SLC, ocean mass change is caused by the exchange of freshwater between the land and the ocean, such as melting of continental ice from glaciers and ice sheets, and variations in land water storage. While many studies have quantified the...journal article 2022
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Steffelbauer, D.B. (author), Riva, R.E.M. (author), Timmermans, Jos (author), Kwakkel, J.H. (author), Bakker, M. (author)Global mean sea-level rise (SLR) has accelerated since 1900 from less than 2 mm yr-1 during most of the century to more than 3 mm yr-1 since 1993. Decision-makers in coastal countries, however, require information on SLR at the regional scale, where detection of an acceleration in SLR is difficult, because the long-term sea-level signal is...journal article 2022
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Simon, K.M. (author), Riva, R.E.M. (author), Broerse, D.B.T. (author)In this study, we examine the effect of transient mantle creep on the prediction of glacial isostatic adjustment (GIA) signals. Specifically, we compare predictions of relative sea level (RSL) change from GIA from a set of Earth models in which transient creep parameters are varied in a simple Burgers model to a reference case with a Maxwell...journal article 2022
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Simon, K.M. (author), Riva, R.E.M. (author), Vermeersen, L.L.A. (author)In this study, we focus on improved constraint of the glacial isostatic adjustment (GIA) signal at present-day, and its role as a contributor to present-day sea level budgets. The main study area extends from the coastal regions of northwestern Europe to northern Europe. Both Holocene relative sea level (RSL) data as well as vertical land...journal article 2021
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Marsman, C.P. (author), van der Wal, W. (author), Riva, R.E.M. (author), Freymueller, J. T. (author)In Southeast Alaska, extreme uplift rates are primarily caused by glacial isostatic adjustment (GIA), as a result of ice thickness changes from the Little Ice Age to the present combined with a low-viscosity asthenosphere. Previous GIA models adopted a 1-D Earth structure. However, the actual Earth structure is likely more complex due to the...journal article 2021
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Kleptsova, Olga S. (author), Dijkstra, Henk A. (author), van Westen, René M. (author), van der Boog, C.G. (author), Katsman, C.A. (author), James, Rebecca K. (author), Bouma, Tjeerd J. (author), Klees, R. (author), Riva, R.E.M. (author), Slobbe, D.C. (author), Zijlema, Marcel (author), Pietrzak, J.D. (author)Joint effects of the dynamic sea-level rise projected changes in the large-scale atmosphere/ocean circulation, and wave climate on hurricane-induced extreme water levels in the Caribbean region are assessed. We use the 2D-depth integrated ADCIRC + SWAN wave-ocean model, baroclinically coupled to an ocean-eddying version of the Community Earth...journal article 2021
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Nijholt, N. (author), Simons, W.J.F. (author), Efendi, J. (author), Sarsito, D. A. (author), Riva, R.E.M. (author)The 2018 (Formula presented.) Palu earthquake is a remarkable strike-slip event due to its nature as a shallow supershear fault rupture across several segments and a destructive tsunami that followed coseismic deformation. GPS offsets in the wake of the 2018 earthquake display a transient in the surface motions of northwest Sulawesi. A...journal article 2021
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Keyzer, L.M. (author), Herman, P.M.J. (author), Smits, B.P. (author), Pietrzak, J.D. (author), James, R.K. (author), Candy, A.S. (author), Riva, R.E.M. (author), Bouma, T.J. (author), van der Boog, C.G. (author), Katsman, C.A. (author), Slobbe, D.C. (author), Zijlema, Marcel (author), van Westen, R.M. (author), Dijkstra, H.A. (author)Shallow tropical bays in the Caribbean, like Orient Bay and Galion Bay in Saint Martin, are often sheltered by coral reefs. In the relatively calm environment behind the reefs, seagrass meadows grow. Together, these ecosystems provide valuable ecosystem services like coastal protection, biodiversity hotspots, nursery grounds for animals and...journal article 2020
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Machado Lima de Camargo, C. (author), Riva, R.E.M. (author), Hermans, T.H.J. (author), Slangen, Aimée B.A. (author)Recent studies disagree about the contribution of variations in temperature and salinity of the oceans—steric change—to the observed sea-level change. This article explores two sources of uncertainty to both global mean and regional steric sea-level trends. First, we analyze the influence of different temperature and salinity data sets on the...journal article 2020
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Vishwakarma, B.D. (author), Royston, S. (author), Riva, R.E.M. (author), Westaway, R.M. (author), Bamber, J.L. (author)The conventional sea level budget (SLB) equates changes in sea surface height with the sum of ocean mass and steric change, where solid-Earth movements are included as corrections but limited to the impact of glacial isostatic adjustment. However, changes in ocean mass load also deform the ocean bottom elastically. Until the early 2000s,...journal article 2020
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Sun, Yu (author), Riva, R.E.M. (author)The effect of glacial isostatic adjustment (GIA) on the shape and gravity of the Earth is usually described by numerical models that solve for both glacial evolution and Earth's rheology, being mainly constrained by the geological evidence of local ice extent and globally distributed sea level data, as well as by geodetic observations of...journal article 2020
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Simon, K.M. (author), Riva, R.E.M. (author)This work provides a comparison of four approaches that can be used to describe uncertainty in models of the long-term glacial isostatic adjustment (GIA) process. The four methods range from pessimistic to optimistic representations of GIA uncertainty. Each estimation method is applied to selected one dimensional GIA model predictions and...journal article 2020
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van Westen, René M. (author), Dijkstra, Henk A. (author), van der Boog, C.G. (author), Katsman, C.A. (author), James, Rebecca K. (author), Bouma, T.J. (author), Kleptsova, Olga (author), Klees, R. (author), Riva, R.E.M. (author), Slobbe, D.C. (author), Zijlema, Marcel (author), Pietrzak, J.D. (author)Sea-level rise poses severe threats to coastal and low-lying regions around the world, by exacerbating coastal erosion and flooding. Adequate sea-level projections over the next decades are important for both decision making and for the development of successful adaptation strategies in these coastal and low-lying regions to climate change....journal article 2020
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- Riva, R.E.M. (author), Nijholt, N. (author), Simons, W.J.F. (author) poster 2019
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James, Rebecca K. (author), van Katwijk, Marieke M. (author), Pietrzak, J.D. (author), Candy, A.S. (author), Klees, R. (author), Riva, R.E.M. (author), Slobbe, D.C. (author), Katsman, C.A. (author), Herman, P.M.J. (author)Global oceanic pH is lowering, which is causing great concern for the natural functioning of marine ecosystems. Current pH predictions are based on open ocean models; however, coastal zones are dynamic systems with seawater pH fluctuating temporally and spatially. To understand how coastal ecosystems will respond in the future, we first need...journal article 2019