GD_3206_01

GD3206Hydro-acoustic Survey

Poerbandono+62(0)22 253 0701 e. 3678 (4th floor) / 3924 (1st floor)

+62(0)22 700 44 [email protected]

hydrography.gd.itb.ac.id

Contents (1st half of semester)

1. Introduction2. Underwater acoustic3. Hydro-acoustic instruments4. Echosounder5. Sub-bottom profiler6. Side scan SONAR7. Seabed sampling8. Mid-term test

Content (2nd half of semester)

9. Water Column Phenomena 10.Measurement of Water Column Dynamics 11.Doppler Hydro-acoustics System 12.Use of Intensity Data 13.ADCP (1) 14.ADCP (2) 15.AWAC16.Final Test

References

Lurton, X. (2002). An Introduction to Underwater Acoustics. Springer – Praxis Publishing. Chichester, UK.de Jong, C. D., Lachapelle G., Skone, S. & Elema, I. A. (2002). Hydrography. Delft University Press. Delft, The Netherlands.Dyer, K. R. (1979). Estuarine Hydrography and Sedimentation. Cambridge University Press. Cambridge, UK.Simpson, M. R. (2001). Discharge Measurements using a Broad-Band Acoustic Doppler Current Profiler. Open File Report 01-1. USGS, California, USA.Ingham, A. E. (1975). Sea Surveying. John-Wiley.Ingham, A. E. (2000). Hydrography for the Surveyor and Engineer. Blackwell Science.

Internet resources

http://kuliah.itb.ac.id/course/view.php?id=212

http://www.pmel.noaa.gov/vents/acoustics/tutorial/tutorial.html

…and many others…

Evaluation

Mid-term test 50%Final test 50%

Judgements:Contributions (e.g. class attendance, participation, presentations)Class exercise, homework and additional assignments

Class rules

GD3206Hydro-acoustic SurveyWeek #01: Introduction

Why?

Hydro-acoustic is the most important tool in hydrographic survey It employs propagation of sound through water Dynamic phenomena across sea level (e.g. tides and waves), water column (e.g. current and turbidity) and seabed (e.g. bathymetry and sediment) are underwater features 'transparent' to acoustic

Earth’s surface is mostly covered by water

Water is transparent to acoustic

Mapping of seafloor has been advanced since the development of hydro-acoustic

With respect to light (i.e. electromagnetic wave) sound propagates more efficiently in the water

Survey, Surveying and Hydro-acoustic

Survey is an activity of collecting data from a ‘population’Surveying is measurement of dimensional relationships, as of horizontal distances, elevations, directions, and angles, on the earth's surfaceHydro-acoustic; hydro=water, acoustic=sound; use of sound for studying water-related phenomena

Hydro-acoustic Survey?

Collection of data from sea surface, water column and seabed using hydro-acoustic instruments

Hydro-acoustic Survey Users

Oil and gas industryEnvironmental study

Homework

Construct a single page writing based on internet resources survey on one of numbers of hydro-acoustic devices and structurize your writing according to the following syllabus:

Title (name of device, manufacturer, etc.)Technical specification (working frequency, etc.)Example of uses (measured parameters, etc.)Advantage and limitations (usefulness, constraints, etc.)Source of information

Submission (by mail as pdf file): Week #03Duplication is not allowed