Hidden delta degradation due to fluvial sediment decline and intensified marine storms DOI Creative Commons
Qingguang Zhu, Fei Xing, Ya Ping Wang

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(18)

Published: May 3, 2024

Deltas are threatened by erosion due to climate change and reduced sediment supply, but their response these changes remains poorly quantified. We investigate the abandoned Yellow River delta that has transitioned from rapid growth ongoing deterioration a river avulsion removing supply. Integrating bathymetric data, process observations, transport modeling, we find while subaerial was stabilized engineering measures, subaqueous continued erode intensified storms, losing 39% of its mass deposited before avulsion. Long-term observations show winter storms initiate scouring delta, contributing up 70% seabed erosion. then analyze 108 global deltas assess risks identify 17 facing similar situations decline storm intensification during past 40 years. Our findings suggest must be integrated into sustainability evaluations.

Language: Английский

Exploring the multiple land degradation pathways across the planet DOI
Remus Prăvălie

Earth-Science Reviews, Journal Year: 2021, Volume and Issue: 220, P. 103689 - 103689

Published: May 25, 2021

Language: Английский

Citations

214

Flood Risk in Urban Areas: Modelling, Management and Adaptation to Climate Change. A Review DOI Creative Commons
Luís Cea, Pierfranco Costabile

Hydrology, Journal Year: 2022, Volume and Issue: 9(3), P. 50 - 50

Published: March 18, 2022

The modelling and management of flood risk in urban areas are increasingly recognized as global challenges. complexity these issues is a consequence the existence several distinct sources risk, including not only fluvial, tidal coastal flooding, but also exposure to runoff local drainage failure, various strategies that can be proposed. high degree vulnerability characterizes such expected increase future due effects climate change, growth population living cities, densification. An increasing awareness socio-economic losses environmental impact flooding clearly reflected recent expansion number studies related sometimes within framework adaptation change. goal current paper provide general review advances flood-risk management, while exploring perspectives fields research.

Language: Английский

Citations

155

Urbanization in and for the Anthropocene DOI Creative Commons
Thomas Elmqvist, Erik Andersson, Timon McPhearson

et al.

npj Urban Sustainability, Journal Year: 2021, Volume and Issue: 1(1)

Published: Feb. 23, 2021

Key insights on needs in urban regional governance - Global urbanization (the increasing concentration settlements of the world population), is a driver and accelerator shifts diversity, new cross-scale interactions, decoupling from ecological processes, risk exposure to shocks. Responding challenges demands fresh commitments city–regional perspective ways that are explictly embedded Anthopocene bio- techno- noospheres, extend existing understanding city–nature nexus scale. Three key dimensions cities constrain or enable constructive, cross scale responses disturbances extreme events include 1) shifting 2) connectivity modularity, 3) complexity. These three characteristic current processes offer potential intervention points for local global action.

Language: Английский

Citations

151

Human impacts outpace natural processes in the Amazon DOI
James S. Albert, Ana Carolina Carnaval, Suzette G. A. Flantua

et al.

Science, Journal Year: 2023, Volume and Issue: 379(6630)

Published: Jan. 26, 2023

Amazonian environments are being degraded by modern industrial and agricultural activities at a pace far above anything previously known, imperiling its vast biodiversity reserves globally important ecosystem services. The most substantial threats come from regional deforestation, because of export market demands, global climate change. Amazon is currently perched to transition rapidly largely forested nonforested landscape. These changes happening much too for species, peoples, ecosystems respond adaptively. Policies prevent the worst outcomes known must be enacted immediately. We now need political will leadership act on this information. To fail biosphere, we our peril.

Language: Английский

Citations

139

Flood hazard potential reveals global floodplain settlement patterns DOI Creative Commons
Laura Devitt, Jeffrey Neal, Gemma Coxon

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 16, 2023

Flooding is one of the most common natural hazards, causing disastrous impacts worldwide. Stress-testing global human-Earth system to understand sensitivity floodplains and population exposure a range plausible conditions strategy identify where future changes flooding or might be critical. This study presents analysis inundated areas varying flood event magnitudes globally for 1.2 million river reaches. Here we show that topography drainage correlate with sensitivities as well societal behaviour. We find clear settlement patterns in which sensitive frequent, low magnitude events, reveal evenly distributed across hazard zones, suggesting people have adapted this risk. In contrast, extreme events tendency populations densely settled these rarely flooded being significant danger from potentially increasing given climate change.

Language: Английский

Citations

89

Large deltas, small deltas: Toward a more rigorous understanding of coastal marine deltas DOI Open Access

Jaia Syvitski,

Edward J. Anthony, Yoshiki Saito

et al.

Global and Planetary Change, Journal Year: 2022, Volume and Issue: 218, P. 103958 - 103958

Published: Oct. 5, 2022

Language: Английский

Citations

88

A globally applicable framework for compound flood hazard modeling DOI Creative Commons
Dirk Eilander, Anaïs Couasnon, Tim Leijnse

et al.

Natural hazards and earth system sciences, Journal Year: 2023, Volume and Issue: 23(2), P. 823 - 846

Published: Feb. 27, 2023

Abstract. Coastal river deltas are susceptible to flooding from pluvial, fluvial, and coastal flood drivers. Compound floods, which result the co-occurrence of two or more these drivers, typically exacerbate impacts compared floods a single driver. While several global models have been developed, do not account for compound flooding. Local-scale provide state-of-the-art analyses but hard scale other regions as based on local datasets. Hence, there is need globally applicable hazard modeling. We develop, validate, apply framework modeling that accounts interactions between all It consists high-resolution 2D hydrodynamic Super-Fast INundation CoastS (SFINCS) model, automatically set up datasets coupled with routing model surge tide model. To test framework, we simulate historical events, Tropical Cyclone Idai Eloise in Sofala province Mozambique, compare simulated extents satellite-derived multiple days both events. Compared CaMa-Flood generally performs better terms critical success index (−0.01–0.09) hit rate (0.11–0.22) worse false-alarm ratio (0.04–0.14). Furthermore, depth maps realistic due floodplain connectivity comprehensive picture direct pluvial simulated. Using new determine dominant drivers transition zones These vary significantly events because differences magnitude time lag argue wide range plausible should be investigated obtain robust understanding interactions, important understand adaptation, preparedness, response. As setup coupling automated, reproducible, applicable, presented promising step forward towards large-scale

Language: Английский

Citations

79

Coastline detection in satellite imagery: A deep learning approach on new benchmark data DOI
Catherine Seale,

Thomas Redfern,

Paul Chatfield

et al.

Remote Sensing of Environment, Journal Year: 2022, Volume and Issue: 278, P. 113044 - 113044

Published: May 13, 2022

Language: Английский

Citations

77

Europe DOI Open Access
D. E. Portner,

M. Scot Roberts,

Peter Alexander

et al.

Cambridge University Press eBooks, Journal Year: 2023, Volume and Issue: unknown, P. 1817 - 1928

Published: June 22, 2023

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Language: Английский

Citations

73

Management of Climate Resilience: Exploring the Potential of Digital Twin Technology, 3D City Modelling, and Early Warning Systems DOI Creative Commons
Khurram Riaz, Marion McAfee, Salem Gharbia

et al.

Sensors, Journal Year: 2023, Volume and Issue: 23(5), P. 2659 - 2659

Published: Feb. 28, 2023

Cities, and in particular those coastal low-lying areas, are becoming increasingly susceptible to climate change, the impact of which is worsened by tendency for population concentration these areas. Therefore, comprehensive early warning systems necessary minimize harm from extreme events on communities. Ideally, such a system would allow all stakeholders acquire accurate up-to-date information respond effectively. This paper presents systematic review that highlights significance, potential, future directions 3D city modelling, systems, digital twins creation technology building resilience through effective management smart cities. In total, 68 papers were identified PRISMA approach. A total 37 case studies included, among (n = 10) define framework twin technology, 14) involve design virtual models, 13) entail generation alerts using real-time sensor data. concludes bidirectional flow data between model real physical environment an emerging concept enhancing resilience. However, research primarily phase theoretical concepts discussion, numerous gaps remain regarding implementation use true twin. Nonetheless, ongoing innovative projects exploring potential address challenges faced communities vulnerable will hopefully lead practical solutions near future.

Language: Английский

Citations

59