Reply to Comment by Darwish on “Soaring Building Collapses in Southern Mediterranean Coasts: Hydroclimatic Drivers and Adaptive Landscape Mitigations”

Abstract We are grateful for Darwish's interest in our paper, Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ). In this reply, we show that Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ) did not attribute building collapses in Alexandria solely to hydroclimatic factors, as stated in the comment. Instead, we emphasize that hydroclimatic drivers are presented as accelerators, with other anthropogenic influences explicitly stated in the original paper. Moreover, our response proves that Darwish (2026, https://doi.org/10.1029/2025ef006885 )'s simplistic statistical approach is physically incorrect and obscures absolute risk by normalizing actual building collapse rates to the total number of buildings within a city. Furthermore, our reply shows that the comment conflates the distinct measurement of soil relaxation using shallow isotope mapping at the city scale, as conducted in Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ), with deep structural geotechnical assessments for foundation design of individual buildings. The utility and complementarity of both methods are already discussed in Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ). We acknowledge that the statement on the “7,000 at‐risk buildings” is only mentioned in the abstract and is inadvertently missed in the main text; however, the calculation leading to this result is detailed in our supplementary data set and methods. Accordingly, Darwish (2026, https://doi.org/10.1029/2025ef006885 )'s comment, while appreciated, misinterprets Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ) and overlooks the contemporary literature on Alexandria's hydrogeological and coastal dynamic contexts and their implications for infrastructure instability.

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Publication Details

Journal
Earth s Future
Published
2026-03-01
DOI
https://doi.org/10.1029/2025ef007826
Primary Topic
Landslides and related hazards
Type
article
Field-Weighted Citation Impact
0.00
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article

Reply to Comment by Darwish on “Soaring Building Collapses in Southern Mediterranean Coasts: Hydroclimatic Drivers and Adaptive Landscape Mitigations”

Sara S. Fouad, Seifeddine Jomaa, Udo Weilacher, Nesma Mohamed et al.
Earth s Future
Landslides and related hazards
article

Reply to Comment by Darwish on “Soaring Building Collapses in Southern Mediterranean Coasts: Hydroclimatic Drivers and Adaptive Landscape Mitigations”

Sara S. Fouad, Seifeddine Jomaa, Udo Weilacher, Nesma Mohamed, Steffen Nijhuis, Yasser Elsheshtawy, Ibrahim H. Saleh, Abderraouf Hzami, Essam Heggy, Oula Amrouni
article en

Abstract

Abstract We are grateful for Darwish's interest in our paper, Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ). In this reply, we show that Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ) did not attribute building collapses in Alexandria solely to hydroclimatic factors, as stated in the comment. Instead, we emphasize that hydroclimatic drivers are presented as accelerators, with other anthropogenic influences explicitly stated in the original paper. Moreover, our response proves that Darwish (2026, https://doi.org/10.1029/2025ef006885 )'s simplistic statistical approach is physically incorrect and obscures absolute risk by normalizing actual building collapse rates to the total number of buildings within a city. Furthermore, our reply shows that the comment conflates the distinct measurement of soil relaxation using shallow isotope mapping at the city scale, as conducted in Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ), with deep structural geotechnical assessments for foundation design of individual buildings. The utility and complementarity of both methods are already discussed in Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ). We acknowledge that the statement on the “7,000 at‐risk buildings” is only mentioned in the abstract and is inadvertently missed in the main text; however, the calculation leading to this result is detailed in our supplementary data set and methods. Accordingly, Darwish (2026, https://doi.org/10.1029/2025ef006885 )'s comment, while appreciated, misinterprets Fouad et al. (2025, https://doi.org/10.1029/2024EF004883 ) and overlooks the contemporary literature on Alexandria's hydrogeological and coastal dynamic contexts and their implications for infrastructure instability.

Earth s FutureVol. 14(3)
University of Southern California (US), Jet Propulsion Laboratory (US), Helmholtz Centre for Environmental Research (DE), University of Carthage (TN), New York University Press (US), Heritage Preservation (US), Institut National des Sciences et Technologies de la Mer (TN), National Institute of Applied Science and Technology (TN), Technical University of Munich (DE), Alexandria University (EG), Delft University of Technology (NL)
Sustainable cities and communities
Openalex Percentile: Top 7%
Landslides and related hazards
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