Earth Observatory Blog

Submitted on 22 Feb 2021 by:

Last December, the Earth Observatory of Singapore (EOS) celebrated the 10th anniversary of its collaboration with the Centre for Volcanology and Geological Hazard Mitigation (CVGHM).

Over the past decade, EOS and CVGHM have shared knowledge, expertise, and adventures through fieldwork, workshops, and publications.

"This long-term collaboration has enabled us to refine eruption histories, unravel magma storage conditions and eruption dynamics, further our understanding of related geophysical signals, and evaluate the implications in terms of hazards in one of the most populated and volcanologically active regions of the world," said Assistant Professor Caroline Bouvet de la Maisonneuve, a Principal Investigator at EOS.

Dr Hanik Humaida, Head of the...

Submitted on 04 Feb 2021 by:

Some are round, some are elongated, and their colours vary from off-white to shades of grey, but they all come from the seafloor of Singapore dating back to 10,000 years ago. Tiny shells, remnants of long-dead organisms, were carefully picked and arranged to compose beautiful award-winning photographs. 

Ms Yu Ting Yan, a PhD candidate working with the Coastal Lab from the Earth Observatory of Singapore (EOS), was recently recognised for two beautiful photographs featuring microscopic shells from Singapore.

Her image of a perfect heart-shaped assemblage of shells was selected as a winner of the 2020/21 Microfossil Image Competition organised by The...

Submitted on 29 Dec 2020 by:

Dear EOS Community,

This year has been an extraordinary one and has been challenging for many, but it has demonstrated how resilient and innovative we can be in response to unique circumstances during this “new normal”. We continued addressing critical questions in Earth science, conducted more research in Singapore than ever before, and brought our science to the public with two exhibitions and a documentary series in collaboration with our partners.

EOS Leadership Transition

I am indebted to Director Emeritus Kerry Sieh for founding EOS and for inviting me to be part of the team in Singapore three years ago. Kerry’s legacy is a world-class research institute, dedicated to...

Submitted on 28 Dec 2020 by:

A rock collection might not seem exciting at first sight. But do you know that the collection from the newly opened Geology Gallery at the Sentosa Nature Discovery, reveals Singapore’s geological past?

Here is an interesting fact: Singapore’s geological past was not always as quiet as it is now. The rocks on display at the Gallery provide clues to each environment Singapore once experienced. By gathering these clues, scientists can put together a narrative of our small island-state’s geological history spanning hundreds of millions of years.

300 million years ago, Singapore and Kuala Lumpur were located thousands of kilometres away from each other. Today, this distance has shortened to approximately 355 kilometres. This phenomenon can be explained by the movement...

Submitted on 21 Dec 2020 by:

In conversation with Dr Karen Lythgoe, Research Fellow at the Earth Observatory of Singapore


1. What area of earth science do you study and monitor?

I am a seismologist at the Earth Observatory of Singapore at Nanyang Technological University, where I monitor and study earthquake hazards and sub-surface imaging both for the deep and the shallow earth. I apply seismology to important Earth science problems, including earthquake processes, Earth structure and dynamics, and smart city development.

2. What opportunities exist to capture heat from the deep earth to create low carbon energy and reduce the emission of greenhouse gases?

Recently there was ...

Submitted on 21 Jul 2020 by:

Sea-level rise is a hot topic today in Singapore. Prime Minister Lee Hsien Loong, in his 2019 National Day Rally Speech, spoke at length about how vulnerable our island state is to 21st-century projections. However, sea-level rise is not a recent phenomenon and neither are the extreme impacts it has had on Singapore’s landscape.

Here’s another interesting fact – Singapore was not always an island. During past ‘ice ages’ where most of the world’s water was locked at the Poles, the sea was found hundreds of kilometres further away from where it is today. The clues pointing to what happened to Singapore thousands of years ago as a result of sea-level changes can be found right under our feet.

A team from NTU’s Earth Observatory of Singapore (EOS), the British...

Submitted on 15 Jun 2020 by:

The first results from Singapore’s first island-wide seismic survey unravel some important features of Singapore’s underground.

In March of last year, a team at the Earth Observatory of Singapore (EOS) recorded the ground movements of Singapore using 88 seismometers placed in locations such as schools, parks and weather stations.

We collected a vast quantity of fascinating data using distant earthquakes to image Singapore’s subsurface, and our first set of results were recently published in the journal Geophysical Research Letters.

Seismologists use a technique called receiver functions to look at boundaries between different rocks...

Submitted on 05 Jun 2020 by:

Rising from the muddy depths of Singapore’s tropical swamps, the distinctive roots of the mangrove trees lie draped in a descending curve – with some parts of the roots buried in the wet soil, and other parts exposed to the humid air. 

Because home along the coast is consistently flooded with sea water brought in by the tides, mangrove trees need to have a part of their roots above water to help them breathe in a waterlogged environment that is often low in oxygen. It is this distinct vertical accretion in their growth that makes mangrove trees incredibly important in our fight against climate change.

The mangrove ecosystem is an intriguing, intricate one that allows its trees to adapt to high temperature and salinity levels. As a dense forest, the tangled...

Submitted on 18 Apr 2020 by:

A higher frequency of unusual weather conditions caused by global warming has melted the Greenland ice sheet by 600 billion tonnes, raising the world’s watermark by 1.5 milimetres – which is about 40 per cent of the total rise in sea level in 2019.

How will this affect Singapore? “Low-lying coastal cities and nations, like Singapore, should be very concerned about the extreme melting in Greenland and Antarctica,” said Professor Benjamin Horton, Chair of the Asian School of the Environment and a Principal Investigator at the Earth Observatory of Singapore. “If the ice...

Submitted on 02 Apr 2020 by:

Channel NewsAsia’s documentary titled “Carbon Conundrum” investigates how carbon emissions contribute to rising global temperatures, which lead to rising sea levels and extreme weather events. In the documentary aired on television (channel 106 on Starhub) on 31 March 2020, Assistant Professor Aron Meltzner and his team provided insights on how rising sea levels in the southeast Asian region could impact Singapore.

Using microatolls (circular colonies of coral) the team is able to track changes in the sea level. A study led by Asst. Prof Meltzner found that more than 6,000 years ago when there was no human-driven climate change, there were fluctuations of about 60 centimetres in sea levels in southeast Asia. He...