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Mass die-offs from human impact and planetary response to the assault could occur by early 2016

Posts Tagged ‘earthquake report’

Global Disasters/ Significant Events – 20 April 2013

Posted by feww on April 20, 2013

UPDATE 6: Powerful Earthquake Kills up to 200, injures many thousands in China

A 7.0-magnitude earthquake hit Lushan county  of Ya’an city in southwest China’s Sichuan Province at 8:02 a.m. Saturday  Beijing Time [00:02 UTC,] killing about 200 people and injuring  many thousands more.

china EQ 20apr2013
Displaced residents rest next to ruins of houses after a 7.0-magnitude earthquake in Longmen Township, Lushan County, Ya’an City of southwest China’s Sichuan Province, April 20, 2013. (Xinhua/Zhang Xiaoli). More images …

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OTHER GLOBAL DISASTERS/ SIGNIFICANT EVENTS

Missouri declares a state of emergency after rainstorm triggers worst flooding in century

Governor Nixon has declared a state of emergency in response to heavy rain and flash flooding in much of the state.

Many portions of NE Missouri received up to 5 inches of rain this week, causing streams and rivers to rise above flood stage, the National Weather Service (NWS) reported.

Several Missouri counties have independently declared states of  emergency issuing mandatory evacuation orders for hundreds of residents.

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Indiana Pounded by Extreme Rain Events, Counties Declare States of Emergency

Several counties in Indiana, including Boone and Tipton counties, north of Indianapolis, has declared states of emergency since Friday.

  • NWS issued a flash flood warning for much of Indiana after most of the state received up to 5 inches of rain.
  • Emergency workers have rescued dozens of people from flooded homes using boats.
  • “Numerous homes are underwater or flooded, stranding homeowners and their families,” said Boone County Sheriff’s Department.
  • Flooding reported along dozens of rivers across the Midwest.

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Latest Disaster Declarations

  • Iowa Gov. Bransted has issued a disaster declaration for five eastern counties:  Cedar, Johnson, Mahaska, Scott and Washington.
  • Illinois Gov. Quinn has declared 38 counties disaster areas.
    • “Illinois has seen an incredible level of devastation and reports indicate that conditions will get worse in the coming days. ” Quinn said.

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Lee County in Iowa Declares a State of Emergency amid Flooding

Lee County, Iowa, has declared a state of emergency due to recent heavy rains that have caused the Mississippi, Des Moines and Skunk rivers to begin rising and the expected flooding that will cause severe damage to public and private property, critical infrastructure, disruption of utility service, including but not limited to power generation, water and waste-water, and endangerment of health and safety of the citizens of Lee County within the disaster area.The Lee County Board of Supervisors have declared.

  • The Mississippi River’s level at Keokuk rose to 21.06 feet on Friday, more than 5 feet above the flood stage, and is expected to crest at 22.8 feet on Saturday, said a report.

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Canada: Ontario Towns Declare States of Emergency

The towns of Bracebridge and Huntsville in Central Ontario, Canada have declared states of emergency, said a report.

  • Heavy rain in Bracebridge has damaged infrastructure and evacuations in low lying areas could follow, the report said.

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China confirms 96 cases of H7N9 infections, 18 fatalities

Chinese health officials confirmed 5 new cases of human H7N9 avian influenza—one in Shanghai, one in Jiangsu and three in Zhejiang—raising the total number of reported cases to 96, with 18 fatalities, Xinhua reported.

  • “A total of 33 cases, including 11 that have ended in death, have been reported in Shanghai. Twenty-three cases, including three deaths, have been reported in Jiangsu Province, and 33 cases, including three deaths, in Zhejiang Province. Anhui Province has reported three cases, with one ending in death. Beijing has reported one case and three have been reported in Henan Province,” said the report.
  • At least 69 of the patients are receiving treatment in designated hospitals.

Posted in Global Disaster watch, global disasters, global disasters 2013, global earthquakes | Tagged: , , , , , , , , , , , , , , , | Leave a Comment »

Deadly Earthquake Hits SW China’s Sichuan Province

Posted by feww on April 20, 2013

UPDATE 5 [12:00 UTC] – 124 confirmed dead, 2,700 injured (350 severely), unknown number trapped

- UPDATE 4 [09:00 UTC] – 104 confirmed dead, 2,500+ injured (150 seriously), unknown number trapped, 32 survivors out of rubble

A military vehicle carrying 17 soldiers to the quake-hit area in  Sichuan plunged 20 meters off a cliff on Saturday, killing at least one soldier and injuring 7 others, a report quoting military sources said.

- UPDATE 3 [08:00 UTC] – 78 confirmed dead, 2,200 injured, unknown number trapped

- UPDATE 2 [05:00 UTC] – 46 confirmed dead, 600 injured, unknown number trapped

- UPDATE 1 [04:00UTC] – Sichuan quake kills at least 80, injures about 500, unknown number trapped

Powerful Earthquake Kills at least 5, injures more than 100 in China

A 7.0-magnitude earthquake hit Lushan county  of Ya’an city in southwest China’s Sichuan Province at 8:02 a.m. Saturday  Beijing Time [00:02 UTC,] the China Earthquake Networks Center (CENC) reported.

  • The shallow quake occurred at a depth of 13km [centered at 30.284°N, 102.956°E, according to USGS] said the provincial seismological bureau.
  • The quake has killed at least 5 people and left more than 100 injured, reported the government of Lushan county, as of posting.
  • The quake was strongly felt  in Sichuan’s capital city of Chengdu,  about 140 kilometers from Ya’an, reportedly for as long as 20 seconds.
  • The quake was also felt in provinces of Guizhou, Gansu, Shaanxi and Yunnan, the report said.

The quake, registered as a 6.6Mw shock by USGS/EHP, was followed by several significant aftershocks.

sichuan quake damage
An aerial photo of some of the damage caused by the earthquake in Lushan county, Ya’an, Sichuan province, SW China April 20, 2013. (Credit: China Daily via Reuters).

China Quake 20Apr 2013
EQ Location Map. Source: USGS/EHP. Map enhanced by FIRE-EARTH

Sichuan EQ ShakeMap

“Red alert level for economic losses. Extensive damage is probable and the disaster is likely widespread. Estimated economic losses are less than 1% of GDP of China. Past events with this alert level have required a national or international level response. Orange alert level for shaking-related fatalities. Significant casualties are likely.”  —USGS/EHP

The epicenter was close to that of the massive quake [2008 Sichuan earthquake, 31.021°N,103.367°E] that killed 70,000 people [figure quoted by Chinese government,] and left more than 5 million people homeless.

Sichuan is one of China’s four major natural-gas-producing provinces, and accounts for 14 percent of the country’s total output, said a report.

Related Links

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DISASTER CALENDARApril 20, 2013  
SYMBOLIC COUNTDOWN:
1,057 Days Left 

Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016.

  • SYMBOLIC COUNTDOWN: 1,057 Days Left to ‘Worst Day’ in the brief Human  History
  • The countdown began on May 15, 2011 …

GLOBAL WARNINGS

Global Disasters: Links, Forecasts and Background

Posted in Global Disaster watch, global disasters, global disasters 2013, Significant Event Imagery, significant events | Tagged: , , , , , , , | Leave a Comment »

Deadly Quake Destroys 2 Villages in SW Iran

Posted by feww on April 9, 2013

Dozens of villagers killed and hundreds more injured after M6.3 earthquake strikes SW Iran

The mainshock, centered at 28.500°N, 51.591°E, struck at a shallow depth of about 10km, Tuesday, April 09, 2013 at 11:52:50 UTC, USGS/EHP reported.

  • The quake struck about 89 km (55 miles) SE of Bandar Bushehr, Iran,  south of the country’s nuclear power station; however, the nuclear plant was not damaged, officials have said.
    • “The earthquake in no way affected the normal situation at the reactor, personnel continue to work in the normal regime and radiation levels are fully within the norm,” an spokesperson for Atomstroyexport, the Russian company which built the facility, told RIA Novosti.
  • Mainshock was followed by at least two dozen aftershocks, 12 of them measuring larger than 4.0Mw including 7 ≥ 4.5Mw, as of posting.
  • The quake swarm has killed at least 32 people, injuring more than 850 and affecting at least 10,000 people in 50 villages.
  • At least 2 villages were leveled by the shocks.
  • Tremors were felt throughout the region, shaking high-rises in Dubai, Doha, Manama and parts of Saudi Arabia, according to local reports.

gfz2013gxyv
Earthquake Location Map. Source: GEOFON Extended Virtual Network (GEVN)

Earthquake Fatalities in Iran

  • Last 10 years: About 32,000
  • Last 50 years: ~ 130,000
  • Since 856 AD: ~ 500,000

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DISASTER CALENDARApril 9, 2013  
SYMBOLIC COUNTDOWN:
1,068 Days Left 

Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016.

  • SYMBOLIC COUNTDOWN: 1,068 Days Left to ‘Worst Day’ in the brief Human  History
  • The countdown began on May 15, 2011 …

GLOBAL WARNINGS

Global Disasters: Links, Forecasts and Background

Posted in environment, Global Disaster watch, global disasters, global disasters 2013 | Tagged: , , , , , , , , , | Leave a Comment »

Powerful Earthquake Strikes NW Costa Rica

Posted by feww on September 6, 2012

DISASTER CALENDAR SYMBOLIC COUNTDOWN: 1,287 Days Left

[September 6, 2012] Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016. 

  • SYMBOLIC COUNTDOWN: 1,287 Days Left to the ‘Worst Day’ in Human History…

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Global Disasters/ Significant Events

CR Magnitude 7.6 quake felt in Nicaragua, Panama and El Salvador

The quake struck beneath the Nicoya peninsula, 137 km (85 miles) west of  the capital, San Jose, USGS/EHP reported.

Earthquake Details  [GEOFON Extended Virtual Network (GEVN)]

Magnitude: 7.6 Mw
Date/Time: 2012-09-05 @ 14:42:09.7 UTC
Epicenter: 85.34°W 10.23°N
Depth: 35 km

UPDATE @ 08:16UTC: At least 3 people were killed and 30 injured, reports said.

Related Links

Global Disasters: Links, Forecasts and Background

GLOBAL WARNING

Posted in Global Disaster watch, global disasters, global disasters 2012, global earthquakes | Tagged: , , , , , , , | Leave a Comment »

M8.2 Aftershock Follows Mega Quake Off Sumatra

Posted by feww on April 11, 2012

Large aftershock strikes Off the Coast of Sumatra

More than a dozen significant aftershocks have occurred off the coast of Sumatra, the largest of which measured 8.2Mw, according to USGS/EHP.


Earthquake Location Map. Source: USGS. Map enhanced by FIRE-EARTH

EQ Details

  • Magnitude 8.2
  • Date-Time:  Wednesday, April 11, 2012 at 10:43:09 UTC
  • Location: 0.773°N, 92.452°E
  • Depth: 16.4 km (10.2 miles)
  • Distances:
    • 618 km (384 miles) SSW of Banda Aceh, Sumatra, Indonesia
    • 712 km (442 miles) W of Sibolga, Sumatra, Indonesia
    • 1,062 km (659 miles) WSW of KUALA LUMPUR, Malaysia
    • 1,773 km (1,101 miles) WNW of JAKARTA, Java, Indonesia
  • Location Uncertainty horizontal +/- 14.2 km (8.8 miles); depth +/- 6.4 km (4.0 miles)
  • Source:  USGS NEIC (WDCS-D)

Tsunami Alert

TSUNAMI BULLETIN NUMBER 005
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1151Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... AN INDIAN-OCEAN-WIDE TSUNAMI WATCH IS IN EFFECT ...

... A MAJOR AFTERSHOCK OCCURRED AT 1043Z WITH MAGNITUDE 8.3 ...

... THE WATCH AREA IS NOW REDUCED ...

A TSUNAMI WATCH IS IN EFFECT FOR

 INDONESIA / INDIA / SRI LANKA / MALDIVES / UNITED KINGDOM

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES.  ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

 ORIGIN TIME -  0839Z 11 APR 2012
 COORDINATES -   2.3 NORTH   93.1 EAST
 LOCATION    -  OFF W COAST OF NORTHERN SUMATRA
 MAGNITUDE   -  8.7

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

 GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
 -------------------  ----- ------  -----  ---------------  -----
 TRINCONMALEE LK       8.6N  81.2E  1116Z   0.04M /  0.1FT  18MIN
 COCOS ISLAND AU      12.1S  96.9E  1102Z   0.08M /  0.3FT  18MIN
 TELUKDALAM ID         0.6N  97.8E  1045Z   0.19M /  0.6FT  10MIN
 SABANG ID             5.8N  95.3E  1010Z   0.36M /  1.2FT  06MIN
 MEULABOH ID           4.1N  96.1E  1007Z   1.06M /  3.5FT  12MIN
 DART 23401            8.9N  88.5E  0956Z   0.03M /  0.1FT  06MIN

 LAT  - LATITUDE (N-NORTH, S-SOUTH)
 LON  - LONGITUDE (E-EAST, W-WEST)
 TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
 AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
        IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
        VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
 PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

 NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
        ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
         MEASUREMENTS AT SIMILAR LOCATIONS.

EVALUATION

 SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY
 ALREADY HAVE BEEN DESTRUCTIVE ALONG SOME COASTS.

 BASED ON THESE DATA THE THREAT CONTINUES FOR ALL COASTAL AREAS OF
 THE INDIAN OCEAN. FOR THOSE AREAS - WHEN NO MAJOR WAVES HAVE
 OCCURRED FOR AT LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME
 OR DAMAGING WAVES HAVE NOT OCCURRED FOR AT LEAST TWO HOURS THEN
 LOCAL AUTHORITIES CAN ASSUME THE THREAT IS PASSED. DANGER TO
 BOATS AND COASTAL STRUCTURES CAN CONTINUE FOR SEVERAL HOURS DUE
 TO RAPID CURRENTS.  AS LOCAL CONDITIONS CAN CAUSE A WIDE
 VARIATION IN TSUNAMI WAVE ACTION THE ALL CLEAR DETERMINATION MUST
 BE MADE BY LOCAL AUTHORITIES.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

 LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
 --------------------------------    ------------    ------------
 INDONESIA        SIMEULUE            2.5N  96.0E    0912Z 11 APR
                  BANDA_ACEH          5.5N  95.1E    0933Z 11 APR
                  SIBERUT             1.5S  98.7E    0944Z 11 APR
                  PADANG              0.9S 100.1E    1025Z 11 APR
                  BENGKULU            3.9S 102.0E    1037Z 11 APR
                  CILACAP             7.8S 108.9E    1150Z 11 APR
                  BANDAR_LAMPUNG      5.7S 105.3E    1200Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
                  BELAWAN             3.8N  98.8E    1326Z 11 APR
                  KUPANG             10.0S 123.4E    1333Z 11 APR
                  BALI                8.7S 115.3E    1234Z 11 APR
 INDIA            GREAT_NICOBAR       7.1N  93.6E    0937Z 11 APR
                  LITTLE_ANDAMAN     10.7N  92.3E    1015Z 11 APR
                  NORTH_ANDAMAN      13.3N  92.6E    1045Z 11 APR
                  PORT_BLAIR         11.9N  92.7E    1050Z 11 APR
                  CHENNAI            13.4N  80.4E    1134Z 11 APR
                  TRIVANDRUM          8.3N  76.9E    1204Z 11 APR
                  KAKINADA           17.2N  82.7E    1204Z 11 APR
                  MANGALORE          13.3N  74.4E    1339Z 11 APR
                  BOMBAY             18.8N  72.6E    1605Z 11 APR
                  GULF_OF_KUTCH      22.7N  68.9E    1636Z 11 APR
 SRI LANKA        TRINCOMALEE         8.7N  81.3E    1049Z 11 APR
                  DONDRA_HEAD         5.9N  80.6E    1054Z 11 APR
                  COLOMBO             6.9N  79.8E    1121Z 11 APR
                  JAFFNA              9.9N  80.0E    1235Z 11 APR
 MALDIVES         GAN                 0.6S  73.2E    1144Z 11 APR
                  MALE                4.2N  73.6E    1149Z 11 APR
                  MINICOV             8.3N  73.0E    1214Z 11 APR
 UNITED KINGDOM   DIEGO_GARCIA        7.3S  72.4E    1202Z 11 APR

Related Links

Global Disasters: Links, Forecasts and Background

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Earthquake Damage in Haiti: Engineers Report

Posted by feww on February 23, 2010

University of Washington: Public Release

Earthquake engineers release report on damage in Haiti

A five-person team sent to evaluate damage from the devastating magnitude-7 [Max magnitude estimated at 7.3 by FEWW] earthquake that struck Haiti on Jan. 12 found no surface evidence of the fault that might have caused the quake, but installed four instruments to measure aftershocks and help pinpoint the epicenter.


Tectonic Map of the area. Click image to enlarge. Source: USGS

University of Washington civil and environmental engineering professor Marc Eberhard led the team that provided engineering support to the United States Southern Command, responsible for all U.S. military activities in South and Central America.

Eberhard is lead author on a report released late last week to the national Earthquake Engineering Research Institute and the United States Geological Survey, both of which sponsored the trip. The report is posted at http://tinyurl.com/yl7gtwb.

A main conclusion is that much of the loss of human life could have been prevented by using earthquake-resistant designs and construction, as well as improved quality control in concrete and masonry work. The authors recommend that simple and cost-effective earthquake engineering be emphasized in Haiti’s rebuilding effort.

The group also gathered more seismic data. Assessing an earthquake’s magnitude can be done from afar, Eberhard said, but establishing the location requires several stations fairly close to the earthquake’s center. Such monitoring stations were not present in Haiti. Knowing the location will help understand what caused the earthquake and forecast the likelihood of future quakes in the area, he said.


Figure 43. Fissures caused by lateral spreading at (a) eastern and (b) western ends of the North Wharf. Source: USGS/EERI Haiti EQ Damage report.

The team provided a ground assessment of places that were worst hit, including the port in Port-au-Prince, the cathedral, the National Palace, the Hotel Montana and the Union School, attended by children of many nationalities. They photographed damage in smaller towns and assessed the safety of hospitals, schools, bridges and other critical facilities.

A survey of 107 buildings in a heavily damaged part of downtown Port-au-Prince found that 28 percent had collapsed and a third would require repairs. A survey of 52 buildings in nearby Léogâne found that more than 90 percent had either collapsed or will require repairs.

“A lot of the damaged structures will have to be destroyed,” Eberhard commented. “It’s not just 100 buildings or 1,000 buildings. It’s a huge number of buildings, which I can’t even estimate.”

Many people asked team members to inspect buildings where the occupants were camped outside because they feared a collapse.

“There’s an enormous amount of fear,” Eberhard said. “People may see cracks in their houses. A large part of what we were doing was identifying what was serious damage versus what was cosmetic damage.”

[...]

For more information, contact Eberhard at  eberhard@uw.edu or  Hannah Hickey at hickeyh@uw.edu
University of Washington

Related Links:

USGS/EERI Advance Reconnaissance Team
TEAM REPORT V. 1.0
February 18, 2010

Executive Summary:
A field reconnaissance in Haiti by a five-member team with expertise in seismology and earthquake engineering has revealed a number of factors that led to catastrophic losses of life and property during the January 12, 2010, Mw = 7.0 earthquake. The field study was conducted January 26 – February 3, 2010, and included investigations in Port-au-Prince and the heavily damaged communities to the west, including Léogâne, Grand Goâve, Petite Goâve, and Oliver.

Seismology. Despite recent seismic quiescence, Haiti has suffered similar devastating earthquakes in the historic past (1751, 1770, 1860). Haiti had no seismographic stations during the main earthquake, so it is impossible to estimate accurately the intensity of ground motions. Nonetheless, the wide range of buildings damaged by the January 12, 2010 earthquake suggests that the ground motions contained seismic energy over a wide range of frequencies. Another earthquake of similar magnitude could strike at any time on the eastern end of the Enriquillo fault, directly to the south of Port-au-Prince. Reconstruction must take this hazard into account.

The four portable seismographs installed by the team recorded a series of small aftershocks. As expected, the ground motions recorded at a hard rock site contained a greater proportion of high frequencies than the motions recorded at a soil site. Two of the stations continue to monitor seismic activity.
A thorough field investigation led the team to conclude that this earthquake was unlikely to have produced any surface rupture.

Geotechnical Aspects: Soil liquefaction, landslides and rockslides in cut slopes, and road embankment failures contributed to extensive damage in Port-au-Prince and elsewhere. A lack of detailed knowledge of the physical conditions of the soils (e.g., lithology, stiffness, density, and thickness) made it difficult for us to quantitatively assess the role of ground-motion amplification in the widespread damage.

Buildings: The Haitian Ministry of Statistics and Infomatics reported that one-story buildings represent 73% of the building inventory. Most ordinary, one-story houses have roofs made of sheet metal (82%), whereas most multi-story houses and apartments have roofs made of concrete (71%). Walls made of concrete/block/stone predominate both in ordinary houses and apartments.

It appears that the widespread damage to residences, and commercial and government buildings was attributable to a great extent to the lack of attention in design and construction to the possibility of earthquakes. In many cases, the structural types, member dimensions, and detailing practices were inadequate to resist strong ground motions. These vulnerabilities may have been exacerbated by poor construction practices. Reinforced concrete frames with concrete block masonry infill appeared to perform particularly poorly. Structures with light (timber or sheet metal) roofs performed better compared with structures with concrete roofs and slabs.

The seismic performance of some buildings was adequate, and some of the damaged buildings appeared to have had low deformation demands. These observations suggest that structures designed and constructed with adequate stiffness and reinforcing details would have resisted the earthquake without being damaged severely.
A damage survey of 107 buildings in downtown Port-au-Prince indicated that 28% had collapsed and another 33% were damaged enough to require repairs. A similar survey of 52 buildings in Léogâne found that 62% had collapsed and another 31% required repairs.

Bridges:
There was no evidence of bridge collapses attributable to the earthquake. Most bridges in Port-au-Prince are simple box culverts consisting of 2.0 to 2.5 meter (6 to 8 ft) deep box girders. However, in several cases the roadway settled differentially between the approaches and the section spanning the culvert. Multi-span bridges on primary routes are engineered structures that experienced some damage but are still serviceable.

Port Facilities: The main port in Port-au-Prince suffered extensive damage during the earthquake, inhibiting the delivery of relief supplies. The collapse of the North Wharf appears to have been caused by liquefaction-induced lateral spreading. The westernmost 120 meters (400 ft) of the South Pier collapsed, and approximately 85% of the vertical and batter piles supporting the remaining section were moderately damaged or broken. The remaining section of pier was shut down to vehicle traffic following additional damage that occurred during an aftershock. The collapse of a pile-supported pier at the Varreux Terminal resulted in the deaths of about 30 people working on the pier at the time of the earthquake. Less severe damage, including a small oil spill, occurred at a marine oil terminal located near Port-au-Prince.

Damage to Institutions:
The functioning of the government and social infrastructure was seriously deteriorated by the loss of personnel, records and facilities. Such losses occurred in numerous clinics, hospitals, police stations, schools, universities, palaces, ministries and churches. These losses have compromised the recovery and reconstruction efforts.

Satellite Imagery: The use of use of remote sensing data, including satellite and aerial imagery, proved highly effective in assisting damage assessment, evaluating the extent of landslides, and guiding rescue and recovery efforts. Light Detecting and Ranging (LIDAR) technology has been effective to create three-dimensional images for damage assessment and rebuilding operations.

Conclusions: The massive human losses can be attributed to a lack of attention to earthquake-resistant design and construction practices, and absence of quality control of concrete and masonry work. The historic pattern of prior earthquakes in Haiti indicates that a Mw 7 earthquake or larger could strike southern Haiti near Port-au-Prince at any time. Reconstruction must therefore be based on sound, simple and cost-effective engineering practice for all possible natural hazards. These principles must be clearly communicated to the citizens of Haiti who are afraid to reoccupy their homes for fear of the next event. Additional fact gathering is needed, both to quantify the January 12th fault rupture and earthquake history (inputs to calculations of future earthquake probabilities), and to more comprehensively evaluate damage to buildings and infrastructure, so as to inform decisions about reconstruction.

Posted in earthquake, haiti earthquake report | Tagged: , , , | 2 Comments »

Haiti Quake Causes Widespread Death, Destruction

Posted by feww on January 13, 2010

M7.3 EQ Causes Widespread Damage in Haiti

Powerful quake measuring up to 7.3 Mw strikes SW of PORT-AU-PRINCE, many feared dead

FEWW Forecast: Another Major Earthquake Could Strike the Region Soon with a Probability of 60% [P ≥ 0.55]

The quake struck about 15 km (10 miles) SW of PORT-AU-PRINCE, Haiti at an approximate  depth of 10 km on Tuesday, January 12, 2010 at 21:53 UTC, USGS/EHP reported.

The mainshock, as of posting, was followed by at least 3 significant aftershocks the largest of which measured up to 6.2 Mw.

Haiti is the poorest country in the western hemisphere with abysmal civic and urban infrastructure. The aftermath of this quake could well prove to be catastrophic, with thousands of people killed or injured.

PORT-AU-PRINCE has an estimated population of about 1.2 million.

Estimated Population Exposed to Earthquake Shaking:

  • Up to 240,000 people live in the “extreme” and  “violent” zones of the quake epicenter exposed to the earthquake shaking and most severe destruction.
  • A total of 1.2 million people live within the “severe” zone of the earthquake damage.


Click Image for USGS PDF file.


Earthquake Location map. Source: USGS/EHP. Enhanced by FEWW. (Click Images to enlarge).

Earthquake Details

  • Magnitude:  [FEWW Estimate: 7.3Mw - USGS/EHP routinely downgrades earthquakes by about 0.3 Mw]
  • Date-Time:
    • Tuesday, January 12, 2010 at 21:53:09 UTC
    • Tuesday, January 12, 2010 at 04:53:09 PM at epicenter
  • Location: 18.451°N, 72.445°W
  • Depth: 10 km (6.2 miles)
  • Region HAITI REGION
  • Distances
    • 15 km (10 miles) SW of PORT-AU-PRINCE, Haiti
    • 140 km (90 miles) E of Les Cayes, Haiti
    • 145 km (90 miles) WNW of Barahona, Dominican Republic
    • 1140 km (710 miles) SE of Miami, Florida
  • Location Uncertainty: horizontal +/- 8.3 km (5.2 miles)
  • Source:  USGS NEIC (WDCS-D)
  • USGS/EHP Event ID: us2010rja6


Seismic Hazard Map. Click image to enlarge.
USGS/EHP


Political Map of Haiti.
USGS/EHP
e


Earthquake Location. Haiti Region.
USGS/EHP


Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. USGS/EHP


Historic Seismicity



Shakemap. Click image to enlarge.

Credit: All images on this page are sourced from USGS/EHP

Tsunami Evaluation

NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 23:45 UTC TUE JAN 12 2010

A tsunami measuring 12 cm crest-to-trough was recorded at Santo Domingo in the Dominican Republic and a tsunami less than 1 cm  crest-to-trough was recorded on a deep ocean gauge in the east-central Caribbean.  Based on these data there could have been destructive tsunami waves near the earthquake epicenter but there is not a threat to coastal areas further away.Therefore the tsunami watch issued by this center is now canceled.

For any affected areas – when no major waves have occurred for at least two hours after the estimated arrival time or damaging waves  have not occurred for at least two hours then local authorities  can assume the threat is passed. Danger to boats and coastal structures can continue for several hours due to rapid currents. As local conditions can cause a wide variation in tsunami wave action the all clear determination must be made by local authorities.

This will be the final product issued by the Pacific Tsunami Warning Center for this event unless additional information becomes available.

Historic Earthquakes in the Region

  • Samana, Dominican Republic,  August 04,  1946 at 17:51 UTC, Magnitude 8.0
  • Aftershock,  August 08, 1946 at  13:28 UTC, Magnitude 7.6

The mainshock struck about 370 km ESE of a M8.0 quake which struck about 65 km off the northeast coast of the Dominican Republic in 1946. The large earthquake was followed by a major M7.6 aftershock.

The mainshock occurred about 65 km off the northeast coast of the Dominican Republic, causing severe damage in northern Dominican Republic from Samana to Santiago and Puerto Plata. The quake left about 100 people dead and more than 20,000 people homeless.

“Almost all the people killed were drowned by a tsunami at Matanzas, near Nagua (Julia Molina). Although the waves were only about 2.5 m (8 ft) high at this location, they moved inland several km, causing such severe damage that the town was abandoned. Maximum wave heights were estimated at 4-5 m (13-16 ft) at Nagua. A small tsunami was recorded by tide gauges at San Juan, Puerto Rico; Bermuda; Daytona Beach, Florida and Atlantic City, New Jersey.” USGS said.

The 7.6 M aftershock, which occurred 4 days after the mainshock, generated a small tsunami and caused additional damage.

Related Links:

For More Information Visit Haiti Earthquake Disaster Links Page!

Posted in Dominican Republic, earthquake, earthquake forecast, Les Cayes, samana | Tagged: , , , , | 14 Comments »

Strong Earthquake Strikes Offshore N Venezuela

Posted by feww on September 13, 2009

Magnitude 6.4 Quake Strikes Offshore Aragua, Northern Venezuela

An earthquake measuring 6.4 Mw struck offshore Aragua, northern Venezuela about 100 km west of Caracas, the Venezuelan capital at a depth of 10 km on Saturday, September 12, 2009 at 20:06 UTC, according to USGS/EHP.

NOAA/NWS/West Coast and Alaska Tsunami Warning Center issue the following Tsunami Information Statement on 09/12/2009 at 4:15PM AST:

A strong earthquake has occurred, but a tsunami IS NOT expected along the coasts of Puerto Rico, the Virgin Islands, U.S. Atlantic and Gulf of Mexico states, and Eastern Canadian provinces. NO tsunami warning, watch or advisory is in effect for these areas.

Based on the earthquake location, magnitude, and historic tsunami records, a damaging tsunami IS NOT expected along the Puerto Rico, Virgin Islands, U.S. Atlantic, Eastern Canadian and Gulf of Mexico coasts.

USGS/EHP had again downgraded their original reading from 7.0 to 6.4Mw.

Venezuelan Interior Minister reported that two people had received major leg injuries, with 12 others suffering less serious injuries as a result of the damage caused by the quake.

Venezuela’s emergency services chief, Luis Diaz Curbelo, reportedly said the quake was felt across the country.

At least seven people were injured and several buildings were damaged in the NW state of Falcon, the worst hit area, he said.

Another report  said the parts of the capital and several other regions were left without electricity.

10-degree Map Centered at 10°N,70°W

venezuela 12-09-09
Earthquake Location. Source of Original map: USGS

Seismic Hazard Map

venezuela  Seismic Hazard Map
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Historic Seismicity

Historic Seismicity venezuela
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Earthquake details

  • Magnitude: 6.4
  • Date-Time:
  • Saturday, September 12, 2009 at 20:06:25 UTC [ Saturday, September 12, 2009 at 08:06:25 PM at epicenter]
  • Location: 10.757°N, 67.847°W
  • Depth: 10 km (6.2 miles)
  • Region:  OFFSHORE ARAGUA, VENEZUELA
  • Distances:
    • 35 km (25 miles) NNE of Puerto Cabello, Venezuela
    • 60 km (35 miles) NNE of Valencia, Venezuela
    • 100 km (65 miles) W of CARACAS, Venezuela
    • 2115 km (1310 miles) SE of Miami, Florida
  • Location Uncertainty: horizontal +/- 5.4 km (3.4 miles);
  • Parameters:  NST=197, Nph=197, Dmin=806.2 km, Rmss=1.12 sec, Gp= 36°, M-type=teleseismic moment magnitude (Mw), Version=7
  • Source: USGS NEIC (WDCS-D)
  • Event ID: us2009llbc

Posted in oil refinery, opec port, seismic activity report, Subduction Zones, Tectonic Boundaries, Transform Faults | Tagged: , , , , , , , , | Leave a Comment »

 
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