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Earthquake-induced Submarine Landslides (EQISLs) and a comparison with their Terrestrial Counterparts: Insights from a New Database
Du, Peng1,3; Li, Linlin1,2; Kopf, Achim3; Wang, Dawei2,4; Chen, Kejie5; Shi, Huabin6; Wang, Weitao1,2; Pan, Xiaoyi2,6; Hu, Gui1; Zhang, Peizhen1,2
2025-02-01
Source PublicationEarth-Science Reviews
ISSN0012-8252
Volume261Pages:105021
Abstract

Earthquakes are recognized as the primary cause of submarine landslides. These earthquake-induced submarine landslides can damage seafloor infrastructure (e.g. submarine cables, oil pipes and rigs) and trigger anomalous tsunamis that cannot be explained solely by coseismic deformation. However, due to their underwater occurrence, earthquake-induced submarine landslides are difficult to observe and measure directly, and current understanding of their characteristics and triggering mechanisms remains limited compared to earthquake-induced terrestrial landslides. Historical instances of anomalous tsunamis and submarine cable breaks following earthquakes provide valuable insights into earthquake-induced submarine landslides. This study reviewed 124 global events of anomalous tsunamis and submarine cable breaks following earthquake occurrences since 1900 using the National Oceanic and Atmospheric Administration tsunami database and systematic literature review. The study compiled key parameters of earthquake-induced submarine landslides associated with anomalous tsunamis and submarine cable breaks, such as locations, initial water depths of the headscarp, average seabed slope angles, volumes and landslide types. This study also obtained seismic parameters such as epicentral distances, peak ground acceleration (PGA) and Modified Mercalli Intensity (MMI) from the USGS-ShakeMap to establish a quantitative relationship between earthquake-induced submarine landslides and their seismic triggering parameters. Additionally, a comparison was made between earthquake-induced submarine landslides and earthquake-induced terrestrial landslides with emphasis on differences and similarities in landslide parameters, earthquake magnitudes, seismic parameters PGA and MMI, earthquake magnitude-maximum epicentral distance relationships and triggering mechanisms. It was observed that most of the earthquake-induced submarine landslides occur in shallow nearshore areas and generate tsunamis characterized by high local wave heights. This attribute leaves little or no time for warning and preventive measures. Earthquakes with onshore epicenters or strike-slip mechanisms that trigger submarine landslide tsunamis pose an additional challenge for early warning systems. Compared to earthquake-induced terrestrial landslides, earthquake-induced submarine landslides typically occur on gentler slopes, have larger volumes, are triggered by smaller earthquake magnitudes and exhibit distinct triggering mechanisms. However, they show more similarities than previously anticipated, particularly in terms of seismic parameters (PGA and MMI) and focal mechanisms. The findings of this study contribute to a better understanding of earthquake-induced submarine landslide characteristics and their quantitative relationship with seismic parameters. It highlights the necessity for further research on anomalous tsunamis and submarine cable breaks following earthquakes in order to improve current understanding of triggering mechanisms, frequencies and hazard potential of earthquake-induced submarine landslides. Moreover, given that studies on both earthquake-induced submarine landslides and earthquake-induced terrestrial landslides explore interconnected scientific questions within a unified framework, this study emphasizes the importance of comparing submarine and terrestrial environments in earthquake-induced geological disaster research.

KeywordEarthquake-induced Landslides Submarine Cable Breaks Submarine Landslides Tsunami
DOI10.1016/j.earscirev.2024.105021
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:001385697800001
PublisherELSEVIERRADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Scopus ID2-s2.0-85211975811
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
Corresponding AuthorLi, Linlin
Affiliation1.Guangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-Sen University, Zhuhai, 519080, China
2.Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China
3.MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, 28359, Germany
4.Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China
5.Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
6.State Key Laboratory of Internet of Things for Smart City and Department of Ocean Science and Technology, University of Macau, Macao, 999078, China
Recommended Citation
GB/T 7714
Du, Peng,Li, Linlin,Kopf, Achim,et al. Earthquake-induced Submarine Landslides (EQISLs) and a comparison with their Terrestrial Counterparts: Insights from a New Database[J]. Earth-Science Reviews, 2025, 261, 105021.
APA Du, Peng., Li, Linlin., Kopf, Achim., Wang, Dawei., Chen, Kejie., Shi, Huabin., Wang, Weitao., Pan, Xiaoyi., Hu, Gui., & Zhang, Peizhen (2025). Earthquake-induced Submarine Landslides (EQISLs) and a comparison with their Terrestrial Counterparts: Insights from a New Database. Earth-Science Reviews, 261, 105021.
MLA Du, Peng,et al."Earthquake-induced Submarine Landslides (EQISLs) and a comparison with their Terrestrial Counterparts: Insights from a New Database".Earth-Science Reviews 261(2025):105021.
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