The physical mechanism for the precursory decrease is illustrated in figure IX (bottom).

Some particles from this region of suppressed density leak into the upstream region and, travelling nearly at the speed of light, they race ahead of the approaching shock and are observed as precursory loss cone anisotropy far into the upstream region.

The precursory decrease (dark circles) of cosmic ray intensity from 135 degrees longitude (sunward direction along the nominal interplanetary magnetic field) is clearly seen more than one day prior to the sudden commencement of the storm (arrival of shock driven by coronal mass ejection at the Earth).

For example, the application of building codes to schools and hospitals in Pakistan, the maintenance of levees and restoration of wetlands in Louisiana or instruction on how to react to the precursory signs of tsunamis would not only have saved lives but would also have been cost effective.

In accordance with General Assembly resolution 58 314 of 1 July 2004, and the note by the Secretary General contained in document A 58 871, the Holy See, in its capacity as an Observer State, will participate in the work of the sixtieth session of the General Assembly with no further need for a precursory explanation prior to any intervention.