• INTRODUCTION
  • STRATEGY
  • MODEL
  • RESULTS
  • THEORY
  • CONCLUSIONS
  • REFERENCES

    Numerical Model

    Chimney collapse simulations were performed using the MITgcm (Massachusetts Institute of Technology General Circulation Model) ( Marshall et. al 1996 ) configured with a 100x100x26, doubly periodic computational domain (Fig.2).

    Figure 3 shows the scope in N/f versus r/h space of the numerical experiments undertaken (values of h, r, N and f for the ten experiments presented here are given in Table 1).

    The model was run with a horizontal resolution sufficient to resolve the Rossby radius in each case. In near surface layers vertical resolution was 20m, while at depth the vertical resolution was 100m. The chimney and its surrounding waters were initially at rest and, for the purpose of visualisation, fluid within the chimney was dyed using a passive tracer.



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