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Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation After: , Mills, J. and D. Dodd. 2014, Ellipsoidally Referenced Surveying for Hydrography, International Federation of Surveyors (FIG), Copenhagen, Demark, May.
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Implementing Satellite Altimetry Data
For The Determination Of River Nile
Dynamic Chart Datum For Safety Navigation
September 2014
Prof. Moustafa Baraka
The Civil Engineering Program
The German University in Cairo
Prof. Adel El-Shazly
Faculty of Civil Engineering
Cairo University
Dr. Waleed El-Dash
Ministry of Water Resources &
Irrigation, Egypt
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Land and topographic surveys
Geoid
MSL
Ellipsoid
Vertical Datum
Navigation and hydrography
Chart datum
River chart datum
Dynamic river chart datum
- Vertical datum (VD) is used as a reference surface.
- The VD is completely realized by the Geoid.
- An approximation to the Geoid is mean sea level (MSL).
- Geoid/MSL for land survey and topographic mapping.
- Chart Datum (CD) for navigation and hydrography
1/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
After: , Mills, J. and D. Dodd. 2014, Ellipsoidally Referenced Surveying for Hydrography,
International Federation of Surveyors (FIG), Copenhagen, Demark, May.
Chart Datum
2/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
After: Desler, J. et al, GPS Derived Water Levels for Large Scale Hydrographic Surveys, US Hydro 2009 Virginia USA, May.
Chart Datum
3/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
River Chart Datum
- The water level should be above datum approximately 95% of the time.
- River chart datum is a sloping surface ≈ slope of river Surface at low stage.
- Daily mean water level should “never” fall more than 0.2 m below the chart
datum during the navigation season.
Dynamic River Chart Datum
- Monthly water level record → accurate chart datum at coastal location
- Many years of records necessary to provide mean water level required to
determine dynamic river chart datum for lakes and rivers.
- Chart datum varies with time, location & discharge (dynamic chart datum).
4/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Dynamic River Chart Datum for River Nile
Using Satellite Altimtery
- Use of satellite altimetry data to bridge the gap in monitoring river Nile
water level ( technical, political and economic constraints).
- Develop a new, rigorous and sustainable dynamic river chart datum using
recent satellite altimetry data in presence of scarce water-level gauge.
- Most of satellite altimetry systems are related to WGS84 ellipsoid.
- Satellite altimetry provides dense and reliable data on:
sea surface height,
wave height,
surface wind speed.
5/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Satellite Altimetry
6/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Satellite Altimetry Systems
7/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Satellite Altimetry For River Nile and Its Lakes
8/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Satellite Data for River Nile and Its Lakes
9/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Determination Dynamic Chart Datum in Lake Nasser
10/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Determination Dynamic Chart Datum in Lake Nasser
11/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Determination Dynamic Chart Datum in Lake Nasser
12/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation
Determination Dynamic Chart Datum in Lake Nasser
13/15
Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 – Resilience Navigation 01 - 03 September, 2014 - Alexandria, Egypt
Implementing Sat Altimetry Data for the Det. of River Nile Organized by AIN
Dynamic Chart Datum For Safety Navigation 14/15