METHOD FOR ALONG-THE-CABLE UNDERWATER PROFILE MEASUREMENT

摘要

A method includes: a guide cable and an observation platform is provided, a profiler is mounted, and a trigger gear is set at the bottom of the guide cable; a weight drop-off gear is set at the top of the guide cable, when the observation platform is located at the top of the guide cable, one weight is released by the weight drop-off gear onto the observation platform so that the observation platform descends along the guide cable owing to additional gravity, and when the observation platform descends to the given position of the trigger gear at the bottom of the guide cable, the release gear releases the weight on the observation platform so that the observation platform returns by its own buoyancy to the top along the guide cable; another weight is subsequently released by the weight drop-off gear so that the observation platform repeats the foregoing reciprocating motion.

主权项

1. A method for an along-the-cable underwater profile measurement, the method comprises:
(1) anchoring a guide cable at a predefined measured water area, providing an observation platform that can make a reciprocating motion along the guide cable, a profiler is mounted on the observation platform, and the buoyancy of the observation platform is adjusted greater than zero, and a trigger gear is set at the bottom of the guide cable; (2) setting a weight drop-off gear at a top of the guide cable, when the observation platform is located at the top of the guide cable, one weight is released by the weight drop-off gear onto the observation platform to enable buoyancy of the observation platform to drop smaller than zero so that the observation platform descends constantly along the guide cable, and when the observation platform descends to a given position of the trigger gear at a bottom of the guide cable, a release gear on the observation platform is triggered by the trigger gear to release the weight on the observation platform so that the observation platform returns by its own buoyancy to the top of the guide cable; the profiler on the observation platform observes the profile of the water area while the observation platform is making a reciprocating motion along the guide cable; and (3) when the observation platform returns to the top of the guide cable or when the observation platform returns to the top of the guide cable and stays there for a period, another weight is released by the weight drop-off gear onto the observation platform so that the observation platform repeats the reciprocating motion and the profiler subsequently observes the profile of the water area.