Sub-bottom Chirp profile survey track lines from eastern Long Island Sound (2024, 2025)

This Shapefile contains the track lines along which sub-bottom data was collected in eastern Long Island Sound in August 2024 and May 2025 using R/V Pritchard. The sub-bottom data was acquired with a towed EdgeTech 3400-OTS Chirp system using a sweep frequency of 2-16kHz. The survey was made up of individual north-south-trending and east-west-trending lines. The shapefile contains the following attributes. Line: is the line name and identifier of each track line. survey: The name of the survey during which the data were collected num_shot: The number of individual traces or shots in each track line start_time: date and time of the start of the line end_time: data and time of the end of the line system: the name of the subbottom system used to collect the data length: the length of each line in kilometers. The work was funded with CT DEEP award CDEP 2003-191.