Education in Maritime Archaeology: The Egyptian Case Study

The investigation of archaeological sites of maritime nature started in Egypt more than a century ago, with the discovery of the Dahshur boats (Haldane 1998) and the ancient harbour of Pharos (Jondet 1912); however, education in maritime and underwater archaeology in Egypt is still in its infancy. This paper will look at the development of maritime archaeology in Egypt as a scientific discipline and the progress achieved to date in providing Egyptian archaeologists with education and training in aspects of maritime archaeology and underwater cultural heritage.     

Mine blast vibration response spectrum for structural vulnerability assessment: case study of heritage masonry buildings

Ground-borne vibrations induced by mine blasting are typically of low amplitudes, which are not considered a major concern for modern engineered structures. However, historic structures are often considered more vulnerable due to inadequate knowledge regarding the state of construction materials and structural response. Specifically, the construction materials used might be fragile or have deteriorated to a stage that could be vulnerable to such vibrations. Simplistic rule based on peak ground motion parameter has been adopted worldwide for safety assessment, while the frequency characteristics of vibrations are not taken into account. Further, there is very limited study on response of heritage structures to near-field blasting. This article presents a practical structural vulnerability assessment method for mine blast-induced vibrations. In particular, a design response spectrum model is proposed based on close range measurements of nearby mine blasting, which is compared with an existing design spectrum model for far-field mine blasts and a typical design spectrum model for earthquake actions. The method is illustrated through a case study of heritage masonry buildings in Australia. The unique blast data presented and the generalized methodology would be useful to both structural engineers and blast engineers in considering potential effects of blasting on heritage structures.