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U.S. Geological Survey Open-File Report 2009-1101

The Partition Intervalometer: A Programmable Underwater Timer for Marking Accumulated Sediment Profiles Collected in Anderson Sediment Traps: Development, Operation, Testing Procedures, and Field Results

Return to: Title Page » Introduction » Development » Function and Operation » Testing Procedures and Results » Results of Field Tests » Summary » Acknowledments » References » List of Figures » Appendix 1: Programming the Intervalometer » Appendix 2: Synopsis of Field Notes

Figure 3.  Diagram showing results of a sediment-trap experiment in Bear Lake, Utah/Idaho, in which sediments were separated by layers of Teflon granules dispensed by an early version of the Intervalometer. Some intervals within the sediments of the collection tube were not clearly separated by the granules because of low sedimentation rates. The scale is in centimeters.
Figure 3. Diagram showing results of a sediment-trap experiment in Bear Lake, Utah/Idaho, in which sediments were separated by layers of Teflon granules dispensed by an early version of the Intervalometer. Some intervals within the sediments of the collection tube were not clearly separated by the granules because of low sedimentation rates.

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