Dates. |
Number of Readings each day. |
Lester Point (at gauge location) Sums of half-hourly readings below Geodetic Survey of Canada, Bench Mark, 66k. |
Lake Melville (at gauge location) Sums of half-hourly readings below Geodetic Survey of Canada, Bench Mark, 72k. |
SUMMARY—continued. |
September
1
2
3
4
5
|
48
48
48
48
48
|
270.37
278.15
249.79
252.62
267.16
|
497.56
506.29
485.19
480.53
499.74
|
Range of tides as determined from 114 observations at each location—
At the automatic gauge location on the Narrows (Lester Point)—
Mean Range..... 3.46 Feet
Range at Spring Tides.... 5.10 Feet
Range at Neap Tides.... 2.02 Feet
At the automatic gauge location on Lake Melville— |
6
7
8
9
10
11
12
13
15
15
|
48
48
48
48
48
48
48
48
48
48
|
256.51
268.76
270.35
257.32
262.26
267.09
279.78
282.14
278.57
283.85
|
487.57
498.73
507.24
492.56
498.56
502.07
510.27
514.30
507.92
504.61
|
Mean Range..... .83 Feet
Range at Spring Tides.... 1.12 Feet
Range at Neap Tides.... .54 Feet
Instantaneous slopes—from 96 half-hourly readings at spring and neap tides—
Springs :—
Outgoing mean slope 1.87 feet with duration of 12½ hours.
Incoming mean slope 1.33 feet with duration of 11½ hours.
Neaps—
Outgoing mean slope 1.22 feet with duration of 13½ hours.
Incoming mean slope .60 feet with duration of 10½ hours. |
16
17
18
19
20
|
48
48
48
48
48
|
298.19
284.77
264.90
264.11
259.67
|
523.39
521.91
501.25
482.08
486.08
|
At spring tides the outgoing slope is about forty per cent greater than the incoming slope, and continues one hour longer.
At neap tides the outgoing slope is about double the incoming slope and continues three hours longer.
|
21
22
23
24
25
26
27
28
29
30
October
1
2
Sums .
Means |
48
48
48
48
48
48
48
48
48
48
48
48
2832
|
274.82
276.71
269.57
260.42
269.26
269.46
266.98
258.57
250.26
259.60
264.16
235.41
15,625.63
5.521 Feet |
511.13
512.57
508.91
491.69
501.64
502.13
499.65
496.68
490.37
496.81
506.84
483.55
29,460.94
10.403 Feet |
Memo.—
The automatic gauges were operated, at the locations shown on the accompanyhing sketch,* on a vertical scale of two inches to the foot, and a horizontal scale of two inches to the hour.
The records were compiled by half-hourly readings to the nearest one hundredth of a foot, and the time of tides to the nearest minute.
All computations are based on the automatic gauge records during the two lunar months, August 5th to October 2nd, 1923.
|
