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Archive for January 29th, 2010

Earthquakes: Worst Disaster Type in Past Decade

Posted by feww on January 29, 2010

Earthquakes caused the deadliest disasters in 2000-09 decade: UNISDR

In its recent News Brief, United Nations International Strategy for Disaster Reduction Secretariat (UNISDR) reported that about 60 per cent of the people killed by disasters in the past decade died as a result of earthquakes.


List of Top 10 Natural disasters by number of deaths – 2009. Source: UNISDR. Click image to enlarge.

“Earthquakes are the deadliest natural hazard of the past ten years and remain a serious threat for millions of people worldwide as eight out of the ten most populous cities in the world are on earthquake fault-lines,” said Margareta Wahlström, UN Special Representative of the Secretary-General for Disaster Risk Reduction.

“Disaster risk reduction is an indispensable investment for each earthquake-prone city and each community. Seismic risk is a permanent risk and cannot be ignored. Earthquakes can happen anywhere at any time. Risk reduction will be a main priority in the Haiti reconstruction process, and we will be working with our partners to ensure that it is central in the reconstruction.”

The Center for Research on Epidemiology of Disasters (CRED) has released the following statistics covering the past 10 years:

Number of disasters for 2000-20009 period: 3,852 disasters

  • Death toll from the disasters: 780,000 people
  • Total number of people affected by the disasters: about a thirs of the planet’s population (more than two billion people)
  • Cost of the damage caused by the disasters: About 1 trillion (US$960 billion).

The worst hit continent in terms of human losses:  Asia, accounting for 85 per cent of all fatalities.

Disaster Types

  • The worst category: Earthquakes, accounting for 60 percent of the fatalities
  • Second Worst Disaster Category:  Storms, accounting for 22 percent of the deaths.
  • Third deadliest: Extremes of Temperature, accounting for 11  percent of the casualties.

The deadliest disasters of the 2000-2009 decade:

  • Indian Ocean Tsunami:   Struck several countries in Asia (2004),  leaving 226,408 dead
  • Cyclone Nargis: Struck  Myanmar (2008), killing 138,366 people
  • Sichuan earthquake:  China (2008) killed at least 87,476 people
  • Pakistan (2005) earthquake: Killed 73,338 people w
  • Heat waves in Europe (2003): Killed 72,210


Human impact by disaster types. Source: UNISDR. Click image to enlarge.

“The number of catastrophic events has more than doubled since the 1980-1989 decade. In contrast, the numbers of affected people have increased at a slower rate. This may be due to better community preparedness and prevention,” said Professor Guha-Sapir, Director of CRED.

Of the more than two billion affected people

  • 44 per cent were affected by floods
  • 30 per cent by droughts
  • ONLY 4 per cent by earthquakes

The  death toll for the last 3 decades (annual average)

  • 2000 decade: 78,000 people per year(ppy)
  • 1990s decade: 43,000 ppy
  • 1980s decade: 75,000  (worsened by two major droughts and famines in Ethiopia and Sudan)

Natural Hazard Events (annual average) and Estimated Economic  Damage

  • 2000 decade: 385  at a cost of US$96 billion
  • 1990 decade: 285  at a cost of US$99 billion
  • 1980 decade: 165  at a cost of US$39 billion


Percentage of people killed by natural disasters by region. Source: UNISDR. Click image to enlarge.

In 2009, some 10,416 people were killed in 327 disasters and  a further 113 million others were affected. Cost of the economic damage:  US$34.9 billion. {there were no major disasters). the total number of people killed and affected by disasters was lower than in 2008, as no major disaster occurred.

In contrast, the 2000-2008 annual averages were 85,535 (deaths), 229,792,397 (affected) and US$102.7 billion (economic damages).


Natural disaster occurrence by disaster type. Source: UNISDR. Click image to enlarge.

The worst disaster in 2009

The worst disaster in 2009 (highest death toll) was the 7.6 magnitude earthquake that struck the island of Sumatra, Indonesia, on 30 September, killing at least 1,100 people.  It was followed by typhoons Morakot, Ketsana and Parma and numerous floods that killed many in Asia, which was home to six of the top 10 countries with the highest number of disaster-related deaths.

Most populous cities on EQ fault-lines (A-Z): Delhi, Jakarta, Kolkata Mexico City, Mumbai, New York, Shanghai and Tokyo.

Source: UNISDR; edited by FEWW

Note: IF the numbers of fatalities/casualties in a given disaster are claimed to be larger than a few hundreds, and no video or photographic evidence is presented to support the claim, those figures should be carefully analyzed. Governments and aid organizations invariably exaggerate the casualty figures to maximize the inflow of aid and donations for self-serving purposes and interests other than those of the victims. See footnote at https://feww.wordpress.com/earthquake/haiti-earthquake-disaster/

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Posted in disaster, disaster continent, natural disasters, storms, UNISDR | Tagged: , , , , | 1 Comment »

Strong Earthquake Strikes Vanuatu

Posted by feww on January 29, 2010

Strong Earthquake Measuring Up to M6.3 Struck Vanuatu

The quake struck about 65 km (40 miles) NNE of Isangel, Tanna, Vanuatu, at a depth of about 85 km (52.8 miles) on Friday, January 29, 2010 at 09:20 UTC.

The mainshock  was preceded by a foreshock measuring up to 5.4Mw which occurred about an hour earlier.

There was no tsunami generated by the quakes, and as of posting no damage or casualties report was made.

Traitor’s Head and Yasur Volcanoes

Today’s main event occurred near Erromango Basin about 45 km SE of Traitor’s Head volcano and some 56 Km NNE of Yasur volcano and may well prove significant in any forthcoming activity at the two volcanoes.

Earthquake Details

  • Magnitude as reported by USGS: 6.0 [Max EQ magnitude estimated by FEWW: 6.3 Mw]
  • Date-Time
    • Friday, January 29, 2010 at 09:20:04 UTC
    • Friday, January 29, 2010 at 08:20:04 PM at epicenter
  • Location: 19.039°S, 169.540°E
  • Depth: 85 km (52.8 miles)
  • Region VANUATU
  • Distances:
    • 65 km (40 miles) NNE of Isangel, Tanna, Vanuatu
    • 195 km (120 miles) SE of PORT-VILA, Efate, Vanuatu
    • 325 km (200 miles) NNE of Tadine, Loyalty Islands, New Caledonia
    • 1935 km (1200 miles) ENE of BRISBANE, Queensland, Australia
  • Location Uncertainty:  horizontal +/- 8.3 km (5.2 miles); depth +/- 6.7 km (4.2 miles)
  • Source: USGS NEIC (WDCS-D)
  • Event ID:  us2010sbaw


Map of Vanuatu. Credit: M.Minderhoud. Click image to enlarge.


EQ Location Map. Source: USGS/EHP. Enhanced by FEWW. Click image to enlarge.


EQ Location Map. Source: USGS/EHP. Edited and Enhanced by FEWW. Click image to enlarge.

Seismic Hazard Map


Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. Source: USGS/EHP.Click image to enlarge.

Historic Seismicity


Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. Source: USGS/EHP. Click image to enlarge.

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Posted in Efate quake, Erromango Basin, Loyalty Islands, vanuatu earthquake, volcanism | Tagged: , , , , , | 1 Comment »

Volcano Ash Threatens Ecuador’s Ambato City

Posted by feww on January 29, 2010

Ambato May Become a Ghost City

Tungurahua Volcano, “Throat of Fire,” Eruption Continues

Volcanic ash from Tungurahua volcano, which has been erupting for the past several weeks, has covered a wide area of central Ecuador, including provincial capital city of Ambato, authorities said.


Tungurahua volcano, located near Baños, Ecuador. Photo Credit: Martin Zeise, Berlin. SEE Official license. Click Image to enlarge.

Authorities fear that the volcanic ash from Tungurahua, will cause heavy crop loss as well as health problems.

“People have to protect their nose and eyes, because the volcanic dust causes problems in the respiratory system,” provincial health Director was quoted as saying.

However, most of the residents of Ambato, located in Ecuador’s central Andean valley, have ignored government advice to done masks, as they swept thick blankets of ash from the streets, health officials said, UPI reported.

“Since the reactivation of the volcano this year, this is the first time that the dust has fallen on the streets of the city,” a city official told Quito’s El Comercio newspaper.

Tungurahua, which means “Throat of Fire,” is located about  180 km south of Quito, capital city of Equador.

After a large eruption on Jan. 11, Tungurahua has continued to eject columns of ash reaching  as high as 4,000 meters above the summit. The volcano erupted more than 20 times on Wednesday, said Daniel Andrade of Ecuadorian Instituto Geofísico (the Institute of Geophysics).

City of Ambato

The city of Ambato (1°14′30″S, 78°37′11″W) lies in the valley of the Central Cordillera and is surrounded by snow-capped volcanoes including Carihuairazo, Cotopaxi, Tungurahua and Chimborazo, the largest mountain in Ecuador.

Ambato has an estimated population of 400,000, has been destroyed by earthquakes several times throughout its history, the last incident occurred on 5 August 1949.

The earthquake completely destroyed the entire city as well as 50 of surrounding towns and villages,  killing at least 6,000, and leaving hundreds of thousands homeless.

Ambato is also prone to seasonal flooding due to the Ambato River which divides the north side of the city.

Tungurahua erupted on May 16, 2006, covering the city in a thick blanket of ash.

Tungurahua Volcano
Country: Ecuador
Volcano Number: 1502-08=
Volcano Type: Stratovolcano
Last Known Eruption: 2009
Summit Elevation: 5,023 m  (16,479 feet)
Latitude: 1.467°S  (1°28’1″S)
Longitude: 78.442°W  ( 78°26’30″W)
Source: Global Volcanism Program (GVP)


Snow-capped Tungurahua, seen from near the town of Baños on its northern flank, rises 3,200 m above steep-walled canyons. Historical eruptions, separated by long reposes, have produced powerful explosions, sometimes accompanied by pyroclastic flows and lava flows. All historical eruptions have originated from the summit crater, and have typically lasted for several years. The largest historical eruptions took place in 1886, 1916, and 1918.  Photo by Minard Hall, 1976 (Escuela Politécnica Nacional, Quito). Caption: GVP.
Click Image to enlarge.


A break in the clouds enabled the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite to observe the eruption on January 23, 2010. As the satellite orbited overhead, a tan ash plume stretched 60 km (40 miles) to the southwest of the peak reaching an altitude of 27,000 feet (8,200 meters), more than 3,000 m (10,000 ft) above the 5,023 m (16,480 ft) summit. Observers from the Ecuadorian Instituto Geofísico reported lava fountains and lava blocks cascading down the flanks of the volcano, as well as loud booms and ashfall in the surrounding communities.
NASA image by Jeff Schmaltz, MODIS RRT. Caption by Robert Simmon.  Edited by FEWW. Click Image to enlarge.

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Posted in Andean valley, ecuador, Ghost City, volcano, Volcano Hazard | Tagged: , , , , | 1 Comment »