Multichannel minisparker seismic-reflection and chirp subbottom data collected offshore Northern California during USGS field activity 2019-643-FA

High-resoulution multichannel seismic-reflection (MCS) and Chirp sub-bottom data were collected by the U.S. Geological Survey in 2019 offshore Humboldt County of northern California to expand data coverage along the southern Cascadia Margin. Data were acquired to characterize offshore faults and to study sediment distribution. MCS and Chirp data were collected coincidentally and were used to determine sediment core targets for marine geohazard studies. These data and information are intended for science researchers, students, policy makers, and general public.