A dataset containing a sample of transmissions and detections assembled from sentinel tags. Sentinel tags are built-in acoustic transmitters which release acoustic signals at programmed intervals. The receiver unit of each sentinel tag records the exact timing of these transmissions. At the same time, any nearby receivers may also record these transmissions as detections. After some processing, the result is a dataframe comprising transmissions and detections, which contains information on detection probability. Data are arranged by source_id, timestamp and then sink_id.
dat_sentinelA dataframe with 106,733 observations and 7 variables:
A POSIXct object which defines the time of each observation.
A character which defines the type of observation: "transmission" or "detection".
A unique identifier of the receiver which received the transmission (see dat_moorings).
The receiver which received the transmission (see dat_moorings).
A unique identifier of the receiver which released the transmission (see dat_moorings).
The receiver which released the transmission (see dat_moorings).
A unique identifier of the sentinel tag which released the transmission (see dat_moorings).
Data were collected by, and belong to, Marine Scotland Science and NatureScot. Data were processed by Edward Lavender. If you wish to use these data, please contact Marine Scotland Science and NatureScot for further information.
Data collection and processing are described in Lavender (2022). Modelling the movements of flapper skate (Dipturus intermedius) in relation to a Scottish Marine Protected Area. University of St Andrews. https://www.doi.org/10.17630/sta/201