Introduction to Marine Geomatics

Question 1

Geomatics is a new scientific term that combines what?

Answer 1

Geodesy and Geoinformatics

Question 2

Which tools and techniques are used in Geomatics?

Answer 2

Land Surveying, Remote Sensing, Cartography, GIS, Global Navigation Systems, Geography and Mapping

Question 3

What is Marine Geomatics also referred to as?

Answer 3

Hydrogeomatics

Question 4

What does Marine Geomatics cover?

Answer 4

The surveying on, above or below the surface of the sea or other areas of water

Question 5

Why was the older term hydrographics considered to be too specific to the preparation of marine charts?

Answer 5

It didn’t include positioning or any other broader marine measurements that are made in all marine environments

Question 6

Give 3 limitations of SBES

Answer 6

1. Spot Depths Only
2. Narrow Beam
3. Not detailed

Question 7

Which 2 survey methods can survey wide sections of the seabed in one transect?

Answer 7

1. MBES

2. SSS

Question 8

What is the advantage of using a MBES?

Answer 8

1000s of data points

Question 9

Why is a SSS used?

Answer 9

To give information on reflectivity characteristics

Question 10

Why would an MBES be preferable to a SSS for surveying nautical depths?

Answer 10

It is able to give depth and numerical data whereas SSS gives qualitative data only