Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Disaster lessons: What you don’t know can kill you

18.10.2005


Something remarkable happened on the island closest to the epicenter of the great Sumatra-Andaman earthquake last December: Only seven of the island’s 78,000 inhabitants died. This is despite the fact tsunamis hit the island only eight minutes after the quake, despite the destruction of many Simuelue villages, and despite the lack of an official tsunami warning system and little in the way of telecommunications.



Why were the lives of Simuelue islanders spared when all around the Indian Ocean, coastal villages, towns, and cities hit by the tsunamis experienced near-total annihilation? The answer, says Humboldt State University geology professor Lori Dengler, is knowledge.

"The single most important lesson for anyone anywhere is that what you know can save your life and what you don’t know can kill you," said Dengler, who was part of an International Tsunami Survey Team of scientists that visited the tsunami destruction zones in April. What she and others discovered in the western coast of Aceh province, Simuelue and the Nias Islands of Indonesia is that there are a number of vital lessons emergency planners and every human being can learn from the 26 December 2004 Indian Ocean catastrophe.


Dengler is also a member of the Redwood Coast Working Group, an unfunded volunteer consensus planning and mitigation group. She presented some of her findings – with particular emphasis on their application to the U.S. and the earthquake and tsunami-prone Pacific Northwest – on Sunday, 16 October, at the annual meeting of the Geological Society of America at in Salt Lake City.

The knowledge the people of Simuelue had was simply this: Once in a while large earthquakes are followed by large killer waves, so it’s always wise to run to high ground and wait a while, just in case.

"They have a long oral tradition that remembers what happened in 1907," said Dengler. That’s the year Simuelue was last was struck by an earthquake-induced tsunami, she said. The survivors of that disaster learned their lesson and wisely didn’t let their descendents forget it. "It doesn’t matter that the information is a century old," said Dengler. "They don’t ignore it. They take great pride in getting it perfectly. You don’t fret about false alarms." They even have a word for the 1907 tsunami in their local language: "smong."

In stark contrast, the populations of other coastal areas where there was far more time between the quake and the tsunami’s arrival to respond were nearly wiped out. "The west coast of Indonesia had fifteen to twenty minutes of warning time and had casualty rates upwards of ninety percent," Dengler said. "It was absolutely horrific." Survivors interviewed in those places had little or no knowledge of tsunamis or what caused them before the disaster, she said.

The Simuelue story was reenacted that day in other places around the Indian Ocean. A merchant marine in a Sri Lankan fishing village remembered the near-shore signs of an approaching tsunami from years ago when he witnessed another in Chile. His warning saved hundreds of lives. Near Phuket in Thailand, a 10-year-old English girl on holiday with her family remembered a geography lesson covering tsunamis given two weeks earlier. She also recognized the danger and is credited for saving at least 100 lives, including her own.

Yet other coastal communities received calls warning them of the coming wave, said Dengler, but the warnings were not understood and were not heeded. The tragedy underlines a problem that’s often overlooked by the public and even emergency planners: A warning is of little use if the public doesn’t understand how to respond to it.

That message was driven home more recently in California on 14 June, when a 7.2 earthquake jolted the ocean floor off Northern California. A tsunami warning was issued within five minutes of the quake, said Dengler. "From that point it was complete chaos," she said. People just didn’t know how to respond. Luckily, there was no tsunami after that earthquake.

The lessons from the Indian Ocean are clear: the answer is planning and public education.

Ann Cairns | EurekAlert!
Further information:
http://www.geosociety.org
http://gsa.confex.com/gsa/2005AM/finalprogram/abstract_93027.htm

More articles from Earth Sciences:

nachricht Geophysicists and atmospheric scientists partner to track typhoons' seismic footprints
16.02.2018 | Princeton University

nachricht NASA finds strongest storms in weakening Tropical Cyclone Sanba
15.02.2018 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

'Lipid asymmetry' plays key role in activating immune cells

20.02.2018 | Life Sciences

MRI technique differentiates benign breast lesions from malignancies

20.02.2018 | Medical Engineering

Major discovery in controlling quantum states of single atoms

20.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>