Acoustical Measurement and Biot Model for Coral Reef Detection and Quantification

Table 2

Configuration of the four acoustic frequencies.

Frequency (kHz)	Type of beam	Half-power beam width (°)	Source level at 1 m (dB re 1 μPa)	Acoustic power (W)	Pulse length (ms)	Noise level (dB) at 1 m depth	Absorption (dB/km)
10	Single	7.0 × 6.9	219.8	100	0.512		0.45
50	Single	7.2 × 7.3	216.9	150	0.512		4.5
100	Single	6.5 × 6.5	217.5	80	0.512		12.4
200	Split	5.4 × 5.4	218.5	60	0.500		57.5