Detection efficiency of acoustic biotelemetry sensors on Wave Gliders

Table 2 Boosted regression tree (BRT) models to understand the factors that determine whether each acoustic ping was detected (yes/no) on each receiver or transceiver

	Model	Explained deviance (%)	AUC
Detections on the WG backward-facing transceiver of
(A) High transceiver	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + mooring.noise + mooring.tilt + mooring.temp + sub.dynamics	39.93	0.92
(B) Medium transceiver		49.35	0.94
(C) Low transceiver		53.29	0.96
(D) V13 tag	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + WG.temp + sub.dynamics	63.99	0.97
Detections on the WG forward-facing transceiver of
(E) High transceiver	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + mooring.noise + mooring.tilt + mooring.temp + sub.dynamics	28.11	0.89
(F) Medium transceiver		43.01	0.94
(G) Low transceiver		48.33	0.95
(H) V13 tag	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + WG.temp + sub.dynamics	37.23	0.90
Detections of the very high transceiver (backward facing) on WG by
(I) High transceiver	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + sub.noise + mooring.tilt + mooring.temp + sub.dynamics	30.03	0.86
(J) Medium transceiver		23.61	0.82
(K) Low transceiver		24.30	0.82
(L) VR2W	~ wind.speed + wave.height + sub.pitch + sub.roll + WG.heading + WG.angle + Distance + sub.noise + WG.temp + sub.dynamics	32.50	0.85

The north mooring had a VR2W receiver (not transceiver) so noise, tilt and temperature data were not available for that mooring line region; therefore, temperature measured on the Wave Glider (WG) transceiver was used instead
wind.speed is the wind speed measured by the WG. wave.height was measured on the CDIP buoy. sub.pitch and sub.roll are the pitch and roll of the WG sub measured by the accelerometer. sub.dynamics is the running 3-minute standard deviation in sub pitch. sub.noise is the noise measured by the WG transceiver. WG.heading is the heading of the WG. WG.angle is the angle between the WG and the respective mooring line. Distance is the distance between the WG and the respective mooring line. mooring.noise, mooring.tilt and mooring.temp are the noise, tilt and temperature, respectively, measured by the mooring line transceivers

ISSN: 2050-3385