New! Sign up for our free email newsletter.
Science News
from research organizations

Using the past to predict the future: The case of Typhoon Hagibis

Date:
July 16, 2020
Source:
Tohoku University
Summary:
The past is often the window to our future, especially when it comes to natural disasters. Using data from the 2018 floods that struck southwestern Japan to calibrate a machine learning model, researchers have successfully identified the flooding caused by Typhoon Hagibis.
Share:
FULL STORY

The past is often the window to our future, especially when it comes to natural disasters. Using data from the 2018 floods that struck southwestern Japan to calibrate a machine learning model, researchers from the International Research Institute of Disaster Science (IRIDeS) at Tohoku University and the Japan-Peru Center for Earthquake Engineering Research and Disaster Mitigation (CISMID, in Spanish), have successfully identified the flooding caused by Typhoon Hagibis.

Typhoon Hagibis devastated Japan in October 2019, killing 91 people, damaging 85,000 homes, and causing approximately $15 billion in damage. Flooding across the affected regions was profound.

In natural disaster rescue and recovery efforts, real-time flood mapping is crucial. It allows governments to direct relief to the areas that need it most. To aid this effort, satellite images using artificial intelligence (AI) are often employed.

Crucial to this is training data. Training data allows the algorithms to learn data and produce outputs when new inputs arise in a process known as machine learning. However, the amount of training data is limited in many cases. Collecting training data immediately following a disaster is costly, time-consuming and many times impossible.

At IRIDeS and CISMID, authors of the study, evaluated the performance of a model to learn from the 2018 floods that struck southwestern Japan, and to identify the floods induced by the 2019 Typhoon Hagibis. The resulting flood maps were consistent with the results of actual flooding maps released by local governments and public institutions.

The authors note that "Our model successfully identifies the inundated areas and verified that AI can learn from past disasters, ultimately allowing us to better predict flooding in future events." They add that "Our next step in this project would be to incorporate data from the unknown event into a second stage of training for a more accurate estimation."


Story Source:

Materials provided by Tohoku University. Note: Content may be edited for style and length.


Journal Reference:

  1. Luis Moya, Erick Mas, Shunichi Koshimura. Learning from the 2018 Western Japan Heavy Rains to Detect Floods during the 2019 Hagibis Typhoon. Remote Sensing, 2020; 12 (14): 2244 DOI: 10.3390/rs12142244

Cite This Page:

Tohoku University. "Using the past to predict the future: The case of Typhoon Hagibis." ScienceDaily. ScienceDaily, 16 July 2020. <www.sciencedaily.com/releases/2020/07/200716101559.htm>.
Tohoku University. (2020, July 16). Using the past to predict the future: The case of Typhoon Hagibis. ScienceDaily. Retrieved May 29, 2024 from www.sciencedaily.com/releases/2020/07/200716101559.htm
Tohoku University. "Using the past to predict the future: The case of Typhoon Hagibis." ScienceDaily. www.sciencedaily.com/releases/2020/07/200716101559.htm (accessed May 29, 2024).

Explore More

from ScienceDaily

RELATED STORIES