Offshore Cuba magnitude 5.9 earthquake (10:50 AM, 10 November 2024) 1

This seismogram is from the Guantanamo Bay seismic station in Cuba. The noise at the bottom and far-right of the graph was caused by a magnitude 5.9 earthquake that hit offshore from the southern coastline of eastern Cuba, in the Caribbean Sea. The quake occurred at 10:50 AM, local time, on 10 November 2024. The hypocenter was between 10 and 20 kilometers deep. This was a strong foreshock to a magnitude 6.8 earthquake in the same area one hour later.

Shaking resulted from transform faulting - left-lateral slip occurred along an ~east-west striking, steeply-dipping fault in the Oriente Transform Fault system. The Oriente Transform Fault forms part of the northern boundary of the Gonâve Microplate in the Cuba area. The eastward extension of the fault in the Hispaniola area is the Septentrional Transform Fault. Transforms occur where two tectonic plates slide past each other - the most famous example is California's San Andreas Fault.
--------------------------------
Info. at:
earthquake.usgs.gov/earthquakes/eventpage/us7000nr0n/exec...
and
en.wikipedia.org/wiki/Septentrional–Oriente_fault_zone
and
en.wikipedia.org/wiki/Gonâve_microplate
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An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy. Earthquake activity is called "seismicity". The study of earthquakes is called "seismology". The actual underground location of an earthquake is the hypocenter, or focus. The site at the Earth's surface, directly above the hypocenter, is the epicenter. Minor earthquakes may occur before a major event - such small quakes are called foreshocks. Minor to major quakes after a major event are aftershocks.

Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries. They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).

Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves. P-waves and S-waves are body waves - they travel through solid rocks. Love waves and Rayleigh waves travel only at the surface - they are surface waves. P-waves are push-pull waves that travel quickly and cause little damage. S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage. Love waves are side-to-side surface waves, like a slithering snake. Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.

Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.

Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.

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Taken on: November 10, 2024

Tags:

offshore

Cuba

5.9

earthquake

earthquakes

quake

quakes

November

2024

seismogram

seismograms

foreshock

foreshocks

Oriente

Transform

Fault

System

Gonave

Plate

Microplate

Gonâve « less

Sets appears in: • 2024 Earthquakes • Caribbean & Lesser Antilles area Earthquakes more » • Earthquakes « less

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