新研究用医学CT技术帮助揭示地震历史

Core Viewpoint - A new study from New Zealand indicates that medical CT technology can analyze ancient sediment cores to reveal earthquake activity history and assess earthquake risk [1] Group 1: Research Findings - Researchers from Waikato University and other institutions scanned 161 sediment cores from 18 ancient lakes in the Hamilton Basin using medical CT equipment [1] - The study successfully identified signs of liquefaction deformation in volcanic ash layers, which typically occur during strong earthquakes [1] - The researchers inferred that at least four geological faults in the region experienced five significant earthquakes over the past 15,700 years, with three of these having magnitudes exceeding 7 [1] Group 2: Risk Assessment - The analysis of these geological faults suggests that the earthquake risk in the area is classified as low to moderate, although there remains a possibility of strong earthquakes occurring [1] - This research represents a global first in using medical CT technology to assist in analyzing earthquake activity, providing a new tool for assessing earthquake risk in various regions [1]