Multi-sample particle flux collector

A nonmetallic, conical fibreglass sediment trap has been designed to collect uncontaminated, preconcentrated samples compatible with trace element analytical requirements. The sediment trap has a 0.5-m² collecting area and a 15-multiple sample cup mechanism to allow the sediment trap to collect gram-size monthly samples during a typical year-long deployment and to isolate them until recovery. The sample acquisition timing is controlled by a programmable CMOS microprocessor for variable sampling intervals from 32 s to tens of months. In addition, the microprocessor stores a permanent event record of trap performance. Particular emphasis has been directed at keeping the trap modular for ease of sample handling and trap manufacturing. Components of the trap are compatible for moorings to 6000 m depth