2018 Swan Islands earthquake

Coordinates: 17°28′08″N 83°31′12″W / 17.469°N 83.520°W / 17.469; -83.520
Source: Wikipedia, the free encyclopedia.
2018 Swan Islands earthquake
CST
Magnitude7.5 Mww
Depth19.0 km (11.8 mi)
Epicenter17°28′08″N 83°31′12″W / 17.469°N 83.520°W / 17.469; -83.520
TypeStrike-slip
Areas affectedHonduras
Guatemala
Belize
Cayman Islands
Max. intensityMMI VII (Very strong)
CasualtiesNone
Shakemap of the earthquake

On 9 January 2018, at approximately 8:51 p.m.

Great Swan Island off the coast of Honduras.[1] The earthquake was felt across Central America, and rattled windows in Tegucigalpa.[2] The earthquake was also felt in the Cayman Islands.[3]

Tsunami advisories were issued for certain areas by the U.S. Tsunami Warning Center. They were later cancelled after further monitoring.[4] No tsunami was generated since the earthquake was an almost pure strike-slip on a near vertical plane, producing little upward movement of the sea floor that would cause a large displacement of water.[5]

Earthquake

The earthquake occurred at a depth of around 10 kilometres (6.2 mi) on a

shear wave. Propagating at 5 km/s, faster than the shear wave velocity of 4 km/s, the event is classified as a supershear earthquake.[7]

Damage

No major damage was reported. However some homes suffered cracks in walls.[8]

Tsunami

A tsunami was observed with maximum heights of 0.4 m (1.3 ft) in

Roatan Island, Honduras.[9] A 0.2 m (0.66 ft) surge was observed in George Town, Cayman Islands.[9]

See also

References

  1. ^ a b "M 7.5 – 44km E of Great Swan Island, Honduras". United States Geological Survey. 9 January 2018. Retrieved 9 January 2018.
  2. ^ Palencia, Gustavo (9 January 2018). "Strong quake in Caribbean Sea shakes Honduras, Mexico and Belize, no tsunami". Reuters. Retrieved 9 January 2018.
  3. ^ "Earthquake sparks tsunami scare". 11 January 2018.
  4. ^ "Magnitude 7.6 quake hits in Caribbean north of Honduras". Associated Press. 9 January 2018. Retrieved 9 January 2018.
  5. ^ "2018 Swan Islands earthquake tsunami". Stack Exchange Network. Retrieved 10 January 2018.[unreliable source?]
  6. .
  7. ]
  8. ^ "7.6 Honduras earthquake, a near miss". temblor.net. 10 January 2018.
  9. ^ a b "Tsunami Event: HONDURAS". ngdc.noaa.gov.

External links