|
Calculated before data transmission (no device retrieval needed)
|
|
PrCA (prey catch attempt)
|
Per-second change in acceleration greater than a (running average + threshold) value
|
Dive-foraging attempts via rapid head and body movements
|
Relay satellite tag
|
One dive sampled and summarized every 2.25 h at 16 Hz for up to 338 days
|
Wedell (Leptonychotes weddellii)41 and southern elephant seals (Mirounga leonine)31
|
[28, 43]
|
|
KD (knockdown event)
|
Abrupt switch of PSAT from vertical to horizontal
|
Beginning of a swimming bout, mortality
|
PSAT
|
2-h summary of 1-Hz data/60 days
|
Pacific halibut (Hippoglossus stenolepis)
|
[29, 44]
|
|
Tilt (g)
|
Degree of PSAT tilt, from vertical to horizontal via z-axis
|
Swimming behavior (sustained or saltatory), mortality
|
PSAT
|
2-h summary of 1-Hz data/60 days
|
Pacific halibut (Hippoglossus stenolepis)
|
[29, 44]
|
|
ATS (activity time-series)
|
Per-second instances of mobility exceeding a dynamic high activity threshold
|
Relative high activity
|
PSAT
|
75-s and 1-h summaries of 1-Hz data/30 days
|
Sandbar sharks (Carcharhinus plumbeus)
|
[This study]
|
|
G
|
Vectorized acceleration along x, y, and z-axes
|
Diurnal activity
|
PSAT
|
3-min summaries of 1.5625-Hz data
|
Pacific sailfish (Istiophorus platypterus)
|
[34]
|
|
Calculated before device retrieval
|
|
Burst acceleration events
|
Exceeds manually defined acceleration threshold
|
Escape behaviors
|
Accelerometer logger
|
500 Hz/18–45 h
|
Red seabream (Pagrus major) and yellowtail kingfish (Seriola lalandi)
|
[45]
|
|
Calculated after device retrieval
|
|
Prey engulfment
|
Differential of acceleration > 1000 m/s
|
Feeding (raptorial and suction)
|
Accelerometer logger
|
200 and 333 Hz/timespan NA
|
Harbor seal (Phoca vitulina)
|
[19]
|
|
ODBA (overall dynamic body acceleration)
|
(Absolute acceleration along x, y, and z-axes) – (static acceleration due to gravity)
|
Energy expenditure (as acceleration around a center of mass)
|
Accelerometer logger
|
Moderate-to-high frequency (> 10 Hz)
|
NA
|
[46]
|
