o
- ~
- 0.5
:J
I
500 lIS
(D) COMMERION'S DOLPHIN
loO
o
100
FREQUENCY (KHZ)
200
FIGURE
9.4. Examples of sonar signals of (A) harbor porpoise (from Kamminga and Wiersma 1981), (B) finless porpoise
(from Kamminga 1988), (C) Dall's porpoise (from Hatakeyama and Soeda 1990),
(D) Commerson's dolphin (from
Kamminga and Wiersma 1981), and (E) Hector's dolphin (from Dawson 1988). The signal waveform
is shown on the left and
the corresponding frequency spectrum on the right.
:0
trl
(')
::r
o
0"
(')
~
0'
;:l
5'
o
o
-e
::r
5'
til
200
100
FREQUENCY (KHZ)
o
o
- ~
- 0.5
:J
I
500 lIS
(E)
HECTOR'S DOlPHIN
1.0
<.,;>
-.I
<.,;>