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Page Title:
Table 3. Sound frequencies measured at increasing distances from the source for bucket dredging cycle events during dredging ... |
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 ERDC TN-DOER-E14
August 2001
Table 3
Sound frequencies measured at increasing distances from the source for
bucket dredging cycle events during dredging operations in Cook Inlet, Alaska
Sound Frequencies for Distinct
Distance
Dredging Cycle Events, Hz
from
Time
Source
Bottom
Bucket
Bucket
Winch
Barge
Session
Cycle
min:sec
m
Contact
Digging
Closing
In/Up
Loading
11
1
0:13
,158
162.85
40.38
316.27
34.99
, 82.10
11
3
2:34
,213
178.99
192.45
347.22
33.65
, 25.57
11
5
4:42
,250
146.70
122.47
341.84
33.65
,733.48
11
7
6:51
,299
60.56
53.83
--
33.65
, 29.61
11
9
8:54
,344
223.41
165.54
--
40.38
,434.70
11
11
11:02
,401
98.25
52.49
40.38
33.65
,605.62
11
13
13:14
,464
94.21
52.49
693.10
34.99
, 32.30
15
32
47:08
,508
145.35
48.45
--
45.76
,1,436.0
15
28
43:05
,552
88.82
275.89
279.93
48.45
, 44.41
15
39
54:09
,607
138.62
371.45
903.05
56.53
,
--
15
25
39:37
,652
87.48
131.89
551.79
34.99
,
--
15
23
37:30
,712
61.91
48.45
263.78
51.14
,
--
15
22
36:26
,783
87.48
104.97
571.98
52.49
,532.95
15
19
33:27
,888
91.52
99.59
51.14
52.49
, 59.22
15
17
31:27
1,065
316.27
156.12
--
49.80
,
--
15
16
30:32
1,114
145.35
87.48
--
56.53
,
--
15
15
29:31
1,182
212.64
130.55
--
49.80
, 60.56
15
13
27:19
1,313
213.99
150.73
668.88
47.10
,
--
15
12
26:18
1,404
99.59
222.06
582.74
48.45
,
--
15
11
25:13
1,482
157.46
191.11
226.10
48.45
,
--
15
7
21:11
1,751
367.41
203.22
565.25
49.80
,
--
15
5
19:08
1,965
72.68
169.57
--
48.45
,
--
8
7
6:32
3,017
74.02
44.41
40.38
--
,
--
8
1
0:56
3,586
65.95
--
--
--
,
--
6
11
10:56
4,589
95.55
165.54
--
--
,
--
6
6
5:53
5,036
72.68
137.27
--
--
,
--
14
2
1:09
5,479
166.88
157.46
392.98
--
,
--
9
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