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Tables
Table 2.1 Proposed spacings for instrumentation at sea .......•.•...•... 52
Table 2.2 Table of proposed position for PUSSes and other offshore
equipment .................................................... 53
Table 2.3 Expected maximum pressure (kPa), time constant (ms) and
impulse (kPa-ms) for the direct shock wave and first
surface reflection from a 4500 lb TNT (2041.17 kg)charge at
75 m depth in water .......................................... 54
Table 2.4 Estimated upper bounds to seismic ground motion expected at
distance r km from a 4500 lb TNT (2041.17 kg) underwater
explosion. . .................................................. 55
Table 3.1 ARE pressure gauge deployment (a) Dimensions of the system;
(b) Spacing of pressure gauges on the cable .................. 56
Table 3.2 ARE pressure gauge calibrations .•..••...•.................... 57
Table 3.3 BGS Vertical Hydrophone String (VHS) specifications ......•..• 58
Table 3.4 BGS Sea Bottom Package (SBP) specifications •................. 59
Table 3.5 Calibration of Pull up Shallow - water Seismometers .......... 60
Table 3.6 PUSS specifications; (a) PUSS geophones, (b) PUSS
hydrophones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 61
Table 3.7 Seismometer coastal sites installed temporarily on "soft"
rock. ........................................................ 62
Table 4.1 Revised shot windows for second deployment •..•......•........ 64
Table 4.2 Offshore site location details (2nd deployment) .............. 65
Table 5.1 Explosion shot times on 29th September 1987 and pressure
pulse arrival recorded at RHAS Goosander •.•••.••..••......•.. 66
Table 6.1 Geological characteristics of offshore sites determined
from British Geological survey maps •••••..••••••.••.•.•••••.. 67
Table 6.2 Geological column and seismic velocities to 2000 m depth at
56°51' 305"N 00022'20.2"V from Amoco VeIl 27/3-1, September
1967. ........................................................ 68
Table 7.1 Data file header block configuration (a) and example (b). 69
Table 7.2 Preliminary results from ARE pressure gauges (a) 4500lb
explosion; (b) 900lb explosion •.•....•..•••......••.•.•...... 70
Table 8.1 Comparison of measured extreme pressures with those
calculated for the direct wave using equation 2.4. after
Sri tt (1984) ................................................. 71
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