Microtremor Data Collection in West LA Region, 2024

The Los Angeles Basin (LAB) is a major sedimentary basin located in southern California, stretching across a broad area that includes much of the city of Los Angeles. This basin is part of the larger Transverse Ranges geologic province and is characterized by a mix of flat lowlands and coastal foothills. The LAB is situated near several active fault systems, including the San Andreas Fault to the north and the Newport-Inglewood Fault to the south, contributing to the region's significant seismic activity. The basin is composed of a range of sedimentary layers that affect seismic waves and ground motion during earthquakes. In the western part of the LAB, 18 microtremor measurements are performed at 8 sites. These measurements play a crucial role in refining the Shear Wave Velocity Profile Database (VSPDB).