Marine and Coastal Geodesy

technique for measurment of wave amplitude
using a Robotic Theodolite and a moored buoy
3. Determination of Tidal levels
Determination of tidal levels based on observations of Marine Biology and microtopography
The upper limit of the green algae is well developed in the intertidal range in the lagoon of Venice (Italy) and forms a well marked line along canals and buildings, close to the average high tide level.
5. Improvement in the resolution and accuracy of sea bottom topography

selected publications
Pytharouli, S. and Stiros, S.  Analysis of short and discontinuous tidal data:  a case study from the Aegean Sea.  Survey Review, in press, 2011

Stiros, S, Psimoulis, P., Identification of near-shore wave characteristics using robotic theodolites (RTS), Journal of Surveying Engineering, ASCE, 136(4), 172-179, 2010.

Stiros, S., Pirazzoli, P., Direct determination of tidal levels for engineering applications based on biological observations,    J. Coastal Eng., 55, 459-467, 2008

Stiros, S., Misconceptions for risks of coastal flooding following the excavation of the Suez and the Corinth Canals in antiquity, Mediterranee, 108, 37-42, 2007

Stiros, S., Pirazzoli, P., Impact of short-wavelength sea-level oscillations on coastal biological zoning: evidence from Nisyros Island (Aegean Sea), and implications for the use of the Biological Mean Sea Level as a Geodetic Datum, Journal of Coastal Research, 20, 244-255, 2004.

1. Sea Surface Topography
Our research focuses on the study of the topography of the sea surface on the base of GPS-on-boat surveys with an accuracy of a few cm
2. Tidal Measurement and Analysis
Development of a methodology to analyze tides and surges in an area with small tide amplitude (<10-20cm) using wavelets and least-squares based spectral analysis techniques in cooperation with Stella Pytharouli (Strathclyde University, http://www.strath.ac.uk/civeng/staff/stellapytharouli/) and evaluation of noise in tidal data.
We also have developed and tested methodologies for measuring the near-shore tide amplitude with cm level measurement using robotic theodolites.
Laboratory of Geodesy
and Geodetic Applications