The National Facility for Seismological Investigations (NFSI) held a marine seismology workshop at Dalhousie University, Halifax, Nova Scotia. This weeklong course aimed to provide technical training for both graduate students and early career in marine seismology. Trainees came from across Canada and internationally to attend the workshop. The evening before the workshop officially began was an ice breaker event where all attendees were able to mingle, reconnect with old colleagues and make new connections over delicious pizza and drinks. The first two days consisted of lectures covering the fundamentals of seismic waves and Earth structure (Q. Liu & Y. Liu); passive and controlled source seismology methods (A. Frederiksen & F. Darbyshire & K. Welford); data acquisition (A. Schaeffer); and practical considerations on the use of ocean bottom seismometers (G. Cairns & M. Nedimovic). Both days had a keynote lecture from one of the invited speakers Juan Pablo Canales and Helen Janiszewski. Prof. Canales discussed various controlled source seismology expeditions he has led to understand near surface structures and tectonics in oceanic crust boundaries. Prof. Janiszewski presented on a comprehensive study of global noise characteristics collected by ocean bottom seismometers and methods to remove this noise.
A tour of the NFSI facility was held where participants had the opportunity to see up close some of NFSI’s fleet of ocean bottom seismometers, a newer design called the Aquarius. Various features of the Aquarius were discussed as well as current developments to improve the design. The other equipment, such as the computer that interfaces with the Aquarius, devices for locating them on the ocean floor (e.g. omnidirectional dunker) and the battery charger unit were discussed. During the tour, a short lecture (K. Bosman & J. Thibodeau) was given on the timetables for ocean bottom seismometer deployment and recovery which can take several hours for a single instrument.