Special issue “2016 Kumamoto earthquake sequence and its impact on earthquake science and hazard assessment”

Hashimoto, Manabu; Savage, Martha K.; Nishimura, Takuya; Horikawa, Haruo; Tsutsumi, Hiroyuki

doi:10.1186/s40623-017-0682-7

Cited by 12 publications

(5 citation statements)

References 43 publications

(48 reference statements)

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“…On the dynamic spectrogram Figure 10b, oscillations with periods from 10 to 14 s stand out. The earthquake shown in Figure 10 occurred at 16:25:06 (UTC) on 15 April 2016, 6 km from Kumamoto, Japan, at the point with coordinates 32.791° N 130.754° E. The magnitude of the earthquake is 7, and its hypocenter was located at a depth of 10 km [26]. Figure 10a shows a fragment of the laser strainmeter record at the time of registration of the tsunamigenic earthquake.…”

Section: Processing and Discussion Of The Results Obtainedmentioning

confidence: 99%

Deformation Anomalies Accompanying Tsunami Origins near the Japanese Islands

Dolgikh,

Dolgikh

2023

JMSE

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In the paper, we analyze laser strainmeter data for the period from 2014 to 2022 to identify deformation anomalies that led to the generation of tsunamis in the area of the Japanese Islands. It is impossible to determine the main characteristics of a tsunami from the deformation anomaly registered by the laser strainmeter, but it is possible to calculate the seabed displacement in the epicenter of a tsunami formation, which causes the tsunami. We have established that the relationship between the registered deformation anomalies and the seabed displacement in the tsunami source in the area of the Japanese Islands is similar to the same relationships found in other regions of the Earth (Indonesia, Latin America, and the West Coast of North America). This result allows us to assert that such a relationship should be typical of any region of the Earth. The obtained results are aimed at solving the problem of reliable short-term tsunami forecasting, which allows for the avoidance of false alarms that lead to significant socio-economic damage.

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Section: Processing and Discussion Of The Results Obtainedmentioning

confidence: 99%

Deformation Anomalies Accompanying Tsunami Origins near the Japanese Islands

Dolgikh,

Dolgikh

2023

JMSE

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“…Earthquakes are traumatic events that cause acute and lasting stress to survivors [ 11 ]. The Kumamoto earthquake had frequent aftershocks [ 1 , 3 ] and Kumamoto City was very close to the epicentre at 4.4 km [ 41 ]. The relatively high insomnia prevalence in our study might have been caused by the continuing worry due to frequent aftershocks [ 11 ] and the proximity to epicentre [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

“…The Kumamoto earthquake caused seven magnitude 5.4–7.3 earthquakes over three days from 14–16 April in 2016 [ 1 ]. It was the first time that a seismic intensity of 7 (on the Japan Meteorological Agency scale) was recorded twice within two days in Japan [ 2 , 3 ]. In Kumamoto Prefecture, aftershocks felt by the human body continue [ 4 ], with more than 4364 tremors in the 15 months since the earthquake [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Depression, Insomnia, and Probable Post-Traumatic Stress Disorder among Survivors of the 2016 Kumamoto Earthquake and Related Factors during the Recovery Period Amidst the COVID-19 Pandemic

Ide-Okochi

Samiso

Kanamori

et al. 2022

IJERPH

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The aftereffects of the severe 2016 Kumamoto earthquake were complicated by the COVID-19 pandemic. This study aimed to identify mental health problems and related factors among survivors five years after the earthquake and clarify its long-term effects. A cross-sectional survey was conducted in 2020 among 19,212 survivors affected by the earthquake who moved from temporary to permanent housing. We analysed 8966 respondents (5135 women, 3831 men; mean age 62.25 ± 17.29 years). Logistic regression analysis was conducted to examine associations between mental health problems and socioeconomic factors. Prevalence rates of psychological distress, insomnia, and probable post-traumatic stress disorder were 11.9%, 35.2%, and 4.1%, respectively. Female gender (OR = 1.33, 95% CI = 1.13–1.57; OR = 1.21, 95% CI = 1.08–1.34; OR = 1.81, 95% CI = 1.41–2.32), public housing (OR = 2.14, 95% CI = 1.63–2.83; OR = 1.54, 95% CI = 1.26–1.88; OR = 2.41, 95% CI = 1.62–3.58), loneliness (OR = 9.08, 95% CI = 7.71–10.70; OR = 5.55, 95% CI = 4.90–6.30; OR = 3.52, 95% CI = 2.77–4.49), COVID-19-induced activity reduction (OR = 1.41, 95% CI = 1.19–1.66; OR = 1.86, 95% CI = 1.68–2.07; OR = 1.80, 95% CI = 1.40–2.31), and COVID-19-induced income reduction (OR = 1.33, 95% CI = 1.12–1.57; OR = 1.43, 95% CI = 1.28–1.59; OR = 1.92, 95% CI = 1.51–2.43) were significantly associated with mental health problems. These results suggest that gender, current housing, loneliness, and COVID-19 affected the survivors’ mental health during recovery.

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“…The Kumamoto earthquake, one of the largest recent earthquakes in southwestern Japan, caused seven M5.4–7.3 earthquakes over 3 days from 14–16 April 2016 [ 1 ]. Many surface ruptures occurred, destroying or partially damaging more than 188,000 houses in Kumamoto Prefecture [ 2 , 3 ]. Aftershocks felt by the human body continued [ 4 ], and there were more than 4364 tremors for 15 months after the earthquake [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Noncompliance with Hypertension Treatment and Related Factors among Kumamoto Earthquake Victims Who Experienced the COVID-19 Pandemic during Postearthquake Recovery Period

Ide-Okochi

Murayama

et al. 2023

IJERPH

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Survivors of the Kumamoto earthquake of 2016 experienced the coronavirus disease (COVID-19) outbreak while carrying additional burdens that might bring inadequate coping. This cross-sectional survey aimed to identify untreated and interrupted consultations among those with hypertension and related factors and to identify the disaster’s long-term effects. Of the 19,212 earthquake survivors who had moved to permanent housing, 7367 (4196 women and 3171 men, mean age 61.8 ± 17.3 years) completed a self-administered questionnaire. The prevalence of hypertension was 41.4%. The results of the logistic regression analysis with the significant independent variables in the bivariate analysis were: reduced income due to COVID-19 (AOR = 3.23, 95%CI = 2.27–4.58) and poor self-rated health (AOR = 2.49, 95%CI = 1.72–3.61) were associated with a risk of untreated or discontinued treatment. Moreover, living in rental, public or restoration public housing was also significantly associated with a higher risk of hypertension noncompliance (AOR = 1.92, 95%CI = 1.20–3.07; AOR = 2.47, 95%CI = 1.38–4.42; AOR = 4.12, 95%CI = 1.14–14.90). These results suggest that changes due to COVID-19, the extent of self-rated health and the type of permanent housing influence the hypertension consulting behaviour of earthquake survivors during recovery. It is crucial to implement long-term public support for the mental health, income and housing concerns of the survivors.

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Special issue “2016 Kumamoto earthquake sequence and its impact on earthquake science and hazard assessment”

Cited by 12 publications

References 43 publications

Deformation Anomalies Accompanying Tsunami Origins near the Japanese Islands

Deformation Anomalies Accompanying Tsunami Origins near the Japanese Islands

Depression, Insomnia, and Probable Post-Traumatic Stress Disorder among Survivors of the 2016 Kumamoto Earthquake and Related Factors during the Recovery Period Amidst the COVID-19 Pandemic

Noncompliance with Hypertension Treatment and Related Factors among Kumamoto Earthquake Victims Who Experienced the COVID-19 Pandemic during Postearthquake Recovery Period

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