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International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home Research News Citizen Seismology Helps Decipher the 2021 Haiti Earthquake Research News Citizen Seismology Helps Decipher the 2021 Haiti Earthquake 2022-03-11 On August 14, 2021, a magnitude 7.2 earthquake struck Haiti, leaving 2,500 dead, 13,000 injured and roughly 140,000 houses destroyed. This came 11-years after Haiti was struck by a 7.0 earthquake that devastated the capital Port-au-Prince and its surrounding areas. Chronic insecurity and a dearth of state resources means Haiti lacks a fully operational seismological network, as found in other earthquake-prone countries. Yet thanks to low-cost, low-maintenance seismometers hosted by private individuals, researchers were able to gauge and measure aftershocks, as well as map the fault responsible for the August 2021 earthquake. A French-Haiti collaborative group stated equipping inexpensive, simple-to-operate seismometers in private homes from 2019 to collect information, increase earthquake awareness and cultivate grassroots protection initiatives. When the 2021 earthquake struck, research co-author Yo Fukushima from Tohoku University's International Research Institute for Disaster Science was on hand to analyze satellite imagery that validated and strengthened the results obtained from the seismometers. "The group of 'citizen seismologists' enabled us to characterize the 2021 earthquake within a few days," said Fukushima. Mr. Pierre Guild Mezile, host of a RaspberryShake seismometer in Jérémie. The device is visible in the left corner of the room. ⒸTohoku University The devices, which were made by the company Raspberry Shake, connected to the internet and produced data published in real-time on an open-access website. Scientists worked directly with the participants to provide a better understanding of the seismic phenomena, creating a unique channel of exchange between ordinary citizens and scientists. Map of RaspberryShake seismo-citizen stations operational in Haiti on February 24, 2021. The regions most affected by the earthquakes on January 12, 2010 and August 14, 2021 are indicated by yellow ellipses. ⒸTohoku University The seismometers allowed scientists to locate the over 100 aftershocks that followed the main quake. Machine learning applied to data obtained from the seismometer also enabled scientists to forecast aftershocks. This is crucial, particularly in Haiti, where many buildings are not built to withstand earthquakes, for organizing emergency responses. They also compared their results to the 2010 earthquake, showing that the fault rupture responsible for the previous earthquake was separated by a 60-km gap. Fukushima stresses that the citizen seismology is relevant for regions of similar socio-economic levels and where conventional seismology networks are difficult to operate. "The high benefit/cost ratio means this is a vital tool for the rapid response to earthquakes and inspires a community-led approach to disaster prevention." The team's research was published in the journal Science on March 11, 2022. Publication Details: Title: Citizen seismology helps decipher the 2021 Haiti earthquakeAuthors: E. Calais, S. Symithe, T. Monfret, B. Delouis, A. Lomax, F. Courboulex, J.P. Ampuero, P.E. Lara, Q. Bletery, J. Chèze, A. Deschamps, B. de Lépinay, B. Raimbault, R. Jolivet, S. Paul, S. St Fleur, D. Boisson, Y. Fukushima, Z. Duputel, L. Xu, and L. MengJournal: ScienceDOI: 10.1126/science.abn1045 Press release in Japanese Contact: Yo FukushimaInternational Research Institute of Disaster ScienceEmail: fukushimairides.tohoku.ac.jp Website: https://irides.tohoku.ac.jp/eng/organization/fukushima_yo.html Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University