TDOT 3 GREENTDOT 3 NIR

Use in surveying breaking waves in coastal areas

Although sonic bathymetry such as the multibeam method is used in the ocean, it is difficult for survey vessels to enter shallow areas where the water depth is only a few meters, so the use of drone-green laser surveying is desired to quickly assess the micro-topography in the coastal area. Although coastal areas are subject to the effects of breaking waves, TDOT 3 GREEN’s high-density laser can be used to acquire data on the seabed topography between waves.

Surveying the seabed topography 400m offshore

● Obtaining data both surface and bottom of the water
● Between 400m offshore, approx. 9m deep at the deepest point
In Japan, an island nation, coastal areas play an extremely important role in the growth of marine life. On the other hand, it is also an area greatly affected by topographic changes due to changes in sea level or sea temperature caused by recent climate change. TDOT 3 GREEN is expected to be utilized in the field of coastal conservation projects because it can quickly and efficiently grasp the microtopography of coastal areas.

Areal scanning of shallow water areas

Sea : Visualization of reef and sandbar geometry within a depth of approximately 6m. , Land : Visualization of blocked and meandering river mouths, river beds, shorelines and step topography near shorelines.
The bar initially seen below the sea surface has disappeared and the seabed has flattened over a large area. The river mouth location has moved significantly to the east, and the step location has receded landward. On the landward side of the step, a beach cusp is observed, which is a rhythmic series of arched shoreline features. This beach cusp is an important feature to consider wave effects on the beach. Surveying with TDOT 3 GREEN provides a clear picture of this topography.

Comparative verification of seashore topography

Visualization of sandbar formed at wave breaking points to confirm fluid topographic changes in the sea area.