4 Numerical Study of Drifting Objects’ Network
Consider the evolution of properties of such networks for g iven sea waves. 25 ISO containers have
been stacked and thrown to the see with the average wave length about 40 meters and narrowness 4 for
the first experiment and 16 for the second one.
See Figure 2 and Figure 3. The first plot shows a total number of network links. Note that for 25
objects total number links for full g raph will be 600. The second plot shows a characteristic spot size
and total maximum, minimum and average kinematic displacement. These values give us the pictu re
of spatial properties of the spot. The third plot shows the cluster distribution over the time, e.g. time
percentage when network has particular number of disjoint clusters. These numbers represent
clustering stability of the network over time.
Comparing the plots of total network links for visibility range we can see that:
1. The total network links decrease with time. For example, in figure two (top p lot), the total
link number for range 50 m decreases down to 50 links for 2400 seconds.
2. Periodic phenomena occur due to wave packets. See the top plots — total network links
slightly grow up and fall down within the period of about 100–120 seconds. Less noticeable
and more frequent oscillations also occur.
3. Network destruction starts after 0 seconds for 50 meters of visibility range, after
(approximately) 150 second for 100 meters, 600 seconds for 150 meters and 1500 seconds for
both 200 and 250 meters.
Comparing the plots of spot size we can see that:
1. Spot size grows almost the same for both wave narrowness parameter (m = 4 and m = 16), but
for more narrowed waves spot size grows more irregularly