Earth Observatory Blog

Submitted on 27 Dec 2018 by:

At approximately 9:30pm local time (2:30pm GMT) on the 22nd December 2018, a tsunami struck Indonesia’s Sunda Strait, which lies between the islands of Java and Sumatra, claiming over 430 lives. According to Indonesia’s disaster agency there are at least 1,500 injured, over 120 people still missing, and around 12,000 people have been displaced.

The tsunami occurred during a local holiday for the December solstice, striking a number of popular tourist destinations, including the Tanjung Lesung beach resort in the west of Java. Eyewitness reports indicate there were two separate waves, with the second, larger wave causing the most damage. 

The tsunami was caused by a violent eruption of Anak Krakatau (Fig. 1), the "child" of Krakatoa, in the Sunda Strait....

Submitted on 15 Aug 2018 by:

A one-metre rise in sea level could dramatically increase the frequency of flooding up to almost five times for tsunami-safe Macau, in a new study led by scientists from Nanyang Technological University, Singapore (NTU Singapore). 

The team of scientists from NTU’s Earth Observatory of Singapore (EOS) and Asian School of the Environment (ASE), used computer modelling, and initially showed that Macau, a densely populated coastal city in China, is relatively safe from tsunamis as it requires an earthquake larger than 8.8-magnitude to cause widespread tsunami floods.

However, with just a sea level rise of 0.5 metres, the tsunami-induced flood risk increases to up to 2.4 times and with a 1 metre rise, up to 4.7 times. 

The increased flooding frequency was...

Submitted on 18 Jan 2018 by:

In 2004, a devastating tsunami struck coastlines around the Indian Ocean. While studying the long-term recovery of the city of Banda Aceh, Indonesia, we found that reconstruction aid provided mostly near the coast, combined with many people's preferences to move to safer areas instead, has had the unintended consequence of the poor becoming disproportionately exposed to coastal hazards.

We published these findings on 8 January in Nature Sustainability. For this and other studies, researchers from the Earth Observatory of Singapore (EOS) at Nanyang Technological University teamed up with our colleagues at the International Centre for Aceh and Indian...