This dataset contains the name, location, date, and acquisition details of the sediment cores collected as part of the Long Island Sound mapping project Phase II.

Time period of content: 2018-04-04 to 2018-08-24

Attribute accuracy: Name, platform, date and time are accurate. Positions are accurate when provided by DGPS (see below). Water depth is based on depth sounder reading, core length is measured after opening the core.

Completeness: The dataset is complete.

Positional accuracy: Location is based on DGPS using the ship GPS antenna for most cores resulting +/- 5 m accuracy. For some cores the ship GPS location wasn’t noted in the logs and the navigation recording was lost. The position is based on target location and visual estimates of the position (+/- 20 m)

Attributes:

Survey: text field that describes the identifier of the field survey

Name: text field describing the sediment core identifier, consisting of survey name, GC for gravity core and a number

Lat: Latitude of core location in decimal degrees

Lon: Longitude of core location in decimal degrees

Date: Date when the core was taken (in ISO format)

Time: Time when the core was taken (in 24-hour ISO format)

Platform: name of the ship used to retrieve the sediment core

Type: Text describing the type of coring device used for retrieving the core (text)

Position: Text describing the positioning system used to determine the location of the core

W_depth_m: water depth at the location where the core was retrieved (in meter) based on ship sounder

Length_m: length of the retrieved sediment core (in meter)