December 23, 2024

Mapping Offshore Faults in Kingston Bay

Kingston Bay, with the Jamaican capital in the background. Picture: Cecilia McHughCores from the seafloor. The sediment layers consist of a historical record of regional conditions. Chocolate brown layers consist of “event deposits.” Picture: Cecilia McHughFrom January 13 to 15, we transited from the Jamaica Passage to Kingston Bay to map offshore structures near the land. Movement along these faults is believed to be associated with the 1907 Kingston earthquake, which shook the capital of the island with a magnitude of 6.2. The multicorer recuperated sediment layers called “occasion deposits.” These layers are noted by their chocolate brown color. The sediment layers will be dated and examined for their chemical structure and physical homes. The goal is to comprehend the procedures that triggered their deposition: Was it an earthquake? Was it a hurricane?On the gravity corer pipeline is a probe that measures heat circulation. It penetrates the sediments and measures heat circulation variability associated with friction along the fault zone, providing us with details about the areas earthquake potential.Heat flow probe attached to the gravity corer pipeline. Photo: Cecilia McHugh