Gravimetric examination of Hagia Sophia's subsurface structure

  title={Gravimetric examination of Hagia Sophia's subsurface structure},
  author={J. Friedrich and C. Gerstenecker and Onur G{\"u}rkan},
  journal={Journal of Geodesy},
The subsurface structure of Hagia Sophia, one of the oldest sacred monuments in the world built between 532–537 under the reign of Justinian in today's Istanbul, has been investigated by using two relative LaCoste-Romberg gravimeters in order to detect hidden cavities which have also served as earthquake dampers in similar constructions. On the building's ground floor a grid of 100 points with a grid size of about 4.m was measured. The mean gravimetric point error was ± 3.10−8 ms−2. The result… Expand
4 Citations
Non-destructive assessment of a buried rainwater cistern at the Carthusian Monastery ‘Vall de Crist’ (Spain, 14th century) derived by microgravimetric 2D modelling
Abstract The microgravity method is one of the geophysical tools used in engineering and environmental and archaeological researches, where the detection of subsurface cavities or buried structuresExpand
Archaeological microgravimetric prospection inside don church (Valencia, Spain)
Abstract The microgravimetric surveying technique is applicable to the detection of shallow subsurface structures if a lateral density contrast is presented, and thus, it is a valid technique forExpand
An automatic scheme for indirect measuring techniques to examine subsurface structures
Publisher Summary The aim of this chapter is to introduce an automatic scheme for indirect measuring techniques to examine subsurface structures. The described scheme is based on the least squaresExpand
Object-oriented model and code for the visual examination of subsurface structures under historical buildings
The object modelling technique proposed by Rumbaugh et al. was used to create a WindowsTM program that allows a visual examination of subsurface structures by the built-in multi-tasking and point-and-click capabilities, and was successfully applied to investigate the subsurfaced structures of Hagia Sophia. Expand


Microgravimetric and gravity gradient techniques for detection of subsurface cavities
.ABSTRACT Microgravimetric and gravity gradient surveying techniques are applicable to the detection and delineation of shallow subsurface cavities and tunnels. Two case histories of the use of theseExpand
Determination of density for reduction of gravimeter observations
This paper outlines a method whereby the density factor used in the Bouguer correction for elevation of a gravity station may be determined. Frequently in the past it has been the practice to assignExpand