Method and device for dynamically monitoring microtopography and landforms near seabed

Abstract

The invention discloses a method and a device for dynamically monitoring microtopography and landforms near seabed. The device for dynamically monitoring microtopography and landforms near seabed comprises a four-side frame, a connecting part, an instrument compartment and a dynamic microtopography and landforms monitoring instrument unit. The method for dynamically monitoring microtopography and landforms near seabed includes the steps of device connection, instrument debugging, device arrangement, device operation and recovery, etc. The device can be used for detecting tidal change, sequential variation of water depths at fixed point, three-dimensional seabed landform change and seabed micro-landform change in real time, thereby achieving the purpose of monitoring the change of seabed micro-landforms. The device and the method are suitable for dynamically observing landforms of seabed with various bed forms and bottom substrates, and are safe and stable. The device is convenient to install and disassemble and can be integrated with multiple marine observation instruments. The method and the device can be widely applied to detection of landforms near seabed, marine charting, marine monitoring, ocean engineering and marine scientific research.

Description

technical field [0001] The invention relates to a dynamic observation method and device near the seabed, in particular to a method and device for dynamic monitoring of micro-topography near the seabed. Background technique [0002] The monitoring support of seabed topography and landform changes is the basis of ocean forecasting, engineering design, resource development, ocean management, sea area demarcation, national defense security and seabed scientific research. Due to natural factors, such as sediment movement, hydrodynamics, weather processes and emergencies, as well as the complex influence of human activities, the topography of the seabed in these areas often undergoes drastic changes, and even fatal consequences. Serious submarine disasters, environmental The deterioration and imbalance of the ecosystem directly affect the development of the marine economy, the safety of waterways, and the safety of marine engineering. [0003] Repeated measurement using tradition...

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Problems solved by technology

[0004] At present, the existing near-bottom dynamic observation technology mainly has the following shortcomings: (1) The bottom shape and bottom quality of the bottom of the seabed are complex and changeable, which is not only reflected in the changeable slope of the bottom topography, but also in the changeable bottom quality of the bottom of the seabed, which may be sand , mud or bedrock, making it difficult to deploy the instrument; (2) The instrument has high requirements for the deployment location, and it is often necessary to find a very flat sea area for instrument release, because whether the instrument is vertical to the seabed directly affects the data quality, but in It is difficult to realize the accurate release of instruments and devices on dynamic ships; (3) There are few types of seabed topography data detected by existing instruments and equipment, and it is difficult to reveal the change law of seabed topography and topography, and it is also difficult to ensure the safety of seabed topography

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