the UK Vertical Offshore Reference Frame - EuroSDR

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Accuracy – how well has all this worked so far? • Tests of interpolating and extrapolating sea level • LAT/Chart Datum comparison • Initial sea trials
Interpolating/predicting sea level at a point Knowing sea level at these points we needed to work out the sea level at some other point Fundamental mathematical building block in VORF Test: 1. Remove known stations from dataset 2. Use the others to predict the value 3. Compute known – predicted 4. Repeat this all around coast 5. Compile statistics RMS prediction error around whole UK coast = 7 cm
Page 1 and 2: A Tale of Many Datums: the UK Verti
Page 3 and 4: What is VORF? • A high resolution
Page 5 and 6: Basic VORF functionality: Transform
Page 7 and 8: Why is VORF needed: Current practic
Page 9 and 10: Data sources (1): . Permanent . Ser
Page 11 and 12: Data sources (3): Satellite Altimet
Page 13 and 14: Data sources (5): OSGM05 - the late
Page 15 and 16: Modelling: Interpolation of surface
Page 17 and 18: Modelling: Chart Datum • VORF uni
Page 19 and 20: Modelling: Chart Datum offset from
Page 21 and 22: Science results (1): Mean Sea Level
Page 23 and 24: VORF software functionality • Tra
Page 25 and 26: Ultra Rapid Point in Polygon (PiP)
Page 27 and 28: Applications: Cost and Efficiency o
Page 29 and 30: Applications: Dealing with non-Char
Page 31: Status and initial test results •
Page 35 and 36: First Sea Trials • Survey carried

the UK Vertical Offshore Reference Frame - EuroSDR

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