Figure 1 Experiment layout. The high and low water table depths in the two wells are indicated with dotted lines. The actual profile between the wells is certainly not a linear connection of the well measurements but this gives an idea of the range of variation. Ross Bagtzaglou is taking prelimenary steps toward a model to fill in between the wells. This model is based on the hydraulic conductivity value below.
Shotpoints from left to right are: D,B,C,A,E
Figure 2 In May, a simple Darcy's law-type experiment was run to determine the hydraulic conductivity of the sand. The sample was taken from the beach used for the experiment. It was, however, removed from the top half meter of the beach. Strong vertical heterogeneaity was observed while digging the wells. Thus the hydraulic conductivity value should be regarded as only a rough proxy for the deeper sand encountered by the seismic waves.
The lab experiment yielded a hydraulic conductivity of 5.68x10-4 m2/s.
Figure 3 Well number 1 was closest to the ocean. Well number 2 was at the far end of the array. The decreased amplitude away from the open water is intuitive. It should also be noted that the far well level lags behind the tide by 1-2 hours.