After: , Mills, J. and D. Dodd. 2014, Ellipsoidally Referenced - - PowerPoint PPT Presentation

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After: , Mills, J. and D. Dodd. 2014, Ellipsoidally Referenced - - PowerPoint PPT Presentation

May 01, 2023 133 likes •319 views

Prof. M. Baraka, Prof. A. El-Shazly, Dr. W. El-Dash Melaha 2014 Resilience Navigation 01 - 03 September,

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SLIDE 1
  • 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.

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SLIDE 2
  • 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

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SLIDE 3
  • 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

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SLIDE 4
  • 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

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SLIDE 5
  • 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

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SLIDE 6
  • 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).

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SLIDE 7
  • 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.

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SLIDE 8
  • 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

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SLIDE 9
  • 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

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SLIDE 10
  • 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

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SLIDE 11
  • 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

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SLIDE 12
  • 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

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SLIDE 13
  • 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

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SLIDE 14
  • 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

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SLIDE 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

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SLIDE 16
  • 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

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SLIDE 17
  • 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

Thank You

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