Limestones as a paleobathymeter for reconstructing past seismic activities: Muroto-misaki, Shikoku, southwestern Japan

Iryu, Yasufumi; Maemoku, Hideaki; Yamada, Tsutomu; Maeda, Yoshimasa

doi:10.1016/j.gloplacha.2008.03.009

Cited by 7 publications

(8 citation statements)

References 31 publications

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“…There is robust geologic evidence for uplift associated with Nankai earthquakes at Cape Muroto (Iryu et al, 2009;Maemoku, 1988Maemoku, , 2001 and the southern tip of the Kii Peninsula (Shishikura et al, 2008;Shishikura, 2013; locations 1 and 2, respectively, in Figure 1d). There is robust geologic evidence for uplift associated with Nankai earthquakes at Cape Muroto (Iryu et al, 2009;Maemoku, 1988Maemoku, , 2001 and the southern tip of the Kii Peninsula (Shishikura et al, 2008;Shishikura, 2013; locations 1 and 2, respectively, in Figure 1d).…”

Section: Resultsmentioning

confidence: 99%

Interseismic Coupling‐Based Earthquake and Tsunami Scenarios for the Nankai Trough

Baranes

Woodruff

Loveless

et al. 2018

Geophysical Research Letters

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Theoretical modeling and investigations of recent subduction zone earthquakes show that geodetic estimates of interseismic coupling and the spatial distribution of coseismic rupture are correlated. However, the utility of contemporary coupling in guiding construction of rupture scenarios has not been evaluated on the world's most hazardous faults. Here we demonstrate methods for scaling coupling to slip to create rupture models for southwestern Japan's Nankai Trough. Results show that coupling‐based models produce distributions of ground surface deformation and tsunami inundation that are similar to historical and geologic records of the largest known Nankai earthquake in CE 1707 and to an independent, quasi‐dynamic rupture model. Notably, these models and records all support focused subsidence around western Shikoku that makes the region particularly vulnerable to flooding. Results imply that contemporary coupling mirrors the slip distribution of a full‐margin, 1707‐type rupture, and Global Positioning System measurements of surface motion are connected with the trough's physical characteristics.

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Section: Resultsmentioning

confidence: 99%

Interseismic Coupling‐Based Earthquake and Tsunami Scenarios for the Nankai Trough

Baranes

Woodruff

Loveless

et al. 2018

Geophysical Research Letters

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“…3, site 6), the proposed boundary between segments A and B (Iryu et al, 2009;Maemoku, 1988Maemoku, , 2001). While Iryu et al (2009) identify emerged encrustations up to 9.18 m above present sea level, the relation between their elevation and the timing and frequency of past episodes of coseismic uplift is uncertain.…”

Section: The Western Nankai (A) Segmentmentioning

confidence: 99%

A systematic review of geological evidence for Holocene earthquakes and tsunamis along the Nankai-Suruga Trough, Japan

Garrett

Fujiwara

Garrett

et al. 2016

Earth-Science Reviews

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACTThe Nankai-Suruga Trough, the subduction zone that lies immediately south of Japan's densely populated southern coastline, generates devastating great earthquakes (magnitude > 8) characterised by intense shaking, crustal deformation and tsunami generation. Forecasting the hazards associated with future earthquakes along this >700 km long fault requires a comprehensive understanding of past fault behaviour. While the region benefits from a long and detailed historical record, palaeoseismology has the potential to provide a longer-term perspective and additional crucial insights. In this paper, we summarise the current state of knowledge regarding geological evidence for past earthquakes and tsunamis along the Nankai-Suruga Trough. Incorporating literature originally published in both Japanese and English and enhancing available results with new age modelling approaches, we summarise and critically evaluate evidence from a wide variety of sources. Palaeoseismic evidence includes uplifted marine terraces and biota, marine and lacustrine turbidites, liquefaction features, subsided marshes and tsunami deposits in coastal lakes and lowlands. While 75 publications describe proposed evidence from more than 70 sites, only a limited number provide compelling, well-dated evidence. The best available records enable us to map the most likely rupture zones of twelve earthquakes that occurred during the historical period. This spatiotemporal compilation suggests that the AD 1707 earthquake ruptured almost the full length of the subduction zone and that earthquakes in AD 1361 and 684 may have been predecessors of similar magnitude. Intervening earthquakes were of lesser magnitude, highlighting the variability in rupture mode that characterises the Nankai-Suruga Trough. Intervals between ruptures of the same seismic segment range from less than 100 to more than 450 years during the historical period. Over longer timescales, palaeoseismic evidence suggests intervals between earthquakes ranging from 100 to 700 years, however these figures reflect a range of thresholds controlling the creation and preservation of evidence at any given site as well as the genuine intervals between earthquakes. At present, there is no geological data that suggest the occurrence of a larger magnitude earthquake than that experienced in AD 1707, however few studies have sought to establish the relative magnitudes of different earthquake and tsunami events along the Nankai-Suruga Trough. Alongside the lack of...

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“…9; Table 2) but did not find intertidal organisms such as T. chinensis and S. kegaki. Although many studies of emerged Holocene marine fossils have been performed in Japan (e.g., Ishibashi et al 1979;Ota et al 1983;Kayanne et al 1987;Maemoku 1988;Miyauchi 1990;Iryu et al 2009;Kitamura et al 2014Kitamura et al , 2015Kitamura et al , 2016, no previous reports of the occurrence of R. typus are known to the authors. All of the coral specimens collected during the present study are 100% aragonite and therefore are not susceptible to subaerial diagenesis, because recrystallization of coral aragonite to calcite occurs in a subaerial setting (Sayani et al 2011).…”

Section: Kouzushimamentioning

confidence: 99%

Late Holocene uplift of the Izu Islands on the northern Zenisu Ridge off Central Japan

Kitamura

Imai

Mitsui

et al. 2017

Prog Earth Planet Sci

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To clarify the Holocene uplift history of the Izu Islands, Japan, we analyze the elevations and 14 C ages of emerged sessile assemblages measured by accelerator mass spectrometry (AMS) on the islands of Niijima, Jinaijima, Shikinejima, and Kouzushima, on the northern Zenisu Ridge. The results suggest that uplift events took place after AD 1950 (uplift event 1), during AD 786-1891 (uplift event 2), during AD 600-1165 (uplift event 3), and during AD 161-686 (uplift event 4), although uplift events 3 and 4 are identified only at Kouzushima. The minimum amount of uplift was estimated to be 0.4-0.9 m in uplift event 1, 2.4-2.7 m in uplift event 2, 3.6 m in uplift event 3, and 3.3-8.1 m in uplift event 4. These events could have been caused by volcanic activity or strong earthquakes. There also remains the possibility that uplift event 2 was caused by the AD 1498 Meio earthquake; in contrast to the previous interpretation, the ages of uplift events are significantly older than the earthquake, based on conventional (non-AMS) methods.

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Limestones as a paleobathymeter for reconstructing past seismic activities: Muroto-misaki, Shikoku, southwestern Japan

Cited by 7 publications

References 31 publications

Interseismic Coupling‐Based Earthquake and Tsunami Scenarios for the Nankai Trough

Interseismic Coupling‐Based Earthquake and Tsunami Scenarios for the Nankai Trough

A systematic review of geological evidence for Holocene earthquakes and tsunamis along the Nankai-Suruga Trough, Japan

Late Holocene uplift of the Izu Islands on the northern Zenisu Ridge off Central Japan

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