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11 Jan 2011 description

Released: 1/11/2011 12:44:35 PM

Contact Information:

U.S. Department of the Interior, U.S.
Geological Survey
Office of Communication
119 National Center
Reston, VA 20192

Heidi Koontz
Phone: 303-202-4763

Clarice Nassif Ransom

29 Oct 2010 description

Released: 10/29/2010 4:23:04 PM

Contact Information:
Heidi Koontz
U.S. Department of the Interior, U.S. Geological Survey
Office of Communication
119 National Center
Reston, VA 20192

29 Sep 2010 description

Released: 9/29/2010 9:06:23 AM

Contact Information:

U.S.

23 Feb 2010 description

RESTON, Va. - The threat of additional damaging earthquakes in Haiti will remain for the next year.

The U.S. Geological Survey (USGS) issued an update to its Jan. 21, 2010, statement, which includes the aftershock probabilities for the next 30-to-90-day period and for the overall year.

U.S. Geological Survey Director Marcia McNutt asked the team of USGS earthquake scientists to continue to provide an evaluation of the earthquakes facing Haiti now and in the future.

18 Feb 2010 description

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.

21 Jan 2010 description

The magnitude 7 earthquake of 12 January 2010 near Port au Prince, Haiti, has generated a sharp increase in concerns about the potential for future earthquakes in Haiti and the surrounding region. These concerns extend to understanding the causes of the earthquake hazard and learning what can be done to ensure seismic safety in the future. The purpose of this statement is to convey our best judgment on these subjects.

Aftershocks: The aftershock sequence of a magnitude 7 earthquake will continue for months if not years in the affected area.

19 Jan 2010 description

TECTONIC SUMMARY

The Haiti earthquake of January 12, 2010, occurred in the boundary region separating the Caribbean plate and the North America plate. This plate boundary is dominated by left-lateral strike slip and compression, and accommodates about 20 mm/y slip, with the Caribbean plate moving eastward with respect to the North America plate.

12 Jan 2010 description

Earthquake Details

Magnitude: 7.0

Date-Time:

Tuesday, January 12, 2010 at 21:53:09 UTC

Tuesday, January 12, 2010 at 04:53:09 PM at epicenter

Time of Earthquake in other Time Zones

Location: 18.451°N, 72.445°W

Depth: 10 km (6.2 miles) set by location program

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:

12 Jan 2010 description

Earthquake Details

Magnitude: 5.9

Date-Time:

- Tuesday, January 12, 2010 at 22:00:42 UTC

- Tuesday, January 12, 2010 at 05:00:42 PM at epicenter

- Time of Earthquake in other Time Zones

Location: 18.321°N, 72.848°W

Depth: 10 km (6.2 miles) set by location program

Region: HAITI REGION

Distances:

60 km (35 miles) WSW of PORT-AU-PRINCE, Haiti

95 km (60 miles) E of Les Cayes, Haiti

170 km (105 miles) SSW of Cap-Haitien, Haiti

1125 km (700 miles) SE of Miami, Florida

Location Uncertainty: horizontal +/- 6.7 km (4.2 miles); depth fixed by …

12 Jan 2010 description

Earthquake Details

Magnitude: 5.5

Date-Time:

- Tuesday, January 12, 2010 at 22:12:05 UTC

- Tuesday, January 12, 2010 at 05:12:05 PM at epicenter

- Time of Earthquake in other Time Zones

Location: 18.485°N, 72.556°W

Depth: 10 km (6.2 miles) set by location program

Region: HAITI REGION

Distances:

25 km (15 miles) WSW of PORT-AU-PRINCE, Haiti

130 km (80 miles) ENE of Les Cayes, Haiti

145 km (90 miles) SSW of Cap-Haitien, Haiti

1125 km (700 miles) SE of Miami, Florida

Location Uncertainty: horizontal +/- 6.1 km (3.8 miles); depth fixed by …

12 Jan 2010 description

Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though some resistant structures exist. On June 24, 1984 (UTC), a magnitude 6.7 earthquake 329 km East of this one struck the Dominican Republic, with estimated population exposures of 320,000 at intensity VII and 2,964,000 at intensity VI, resulting in an estimated 5 fatalities. Recent earthquakes in this area have caused landslides that may have contributed to losses.