Successful heritage management requires a robust comprehension of the threats facing archaeological sites, at both current and future timescales. Siraf, on the Persian Gulf of Iran, is a site of national and international importance whose history stretches back to the Sassanid period (224–652 AD). In the present context of global change (drought and relative sea-level rise) and anthropogenic impacts (coastal artificialization and reduced sediment supply), the city's waterfront archaeology is undergoing significant erosion. Nonetheless, at present, the processes leading to the loss of Siraf's in situ archaeological remains are still poorly understood, including the rates, timing and drivers of coastal erosion. Here we use Landsat images to monitor shoreline changes along the Siraf coastline between 1973 and 2016. We spatially quantify the causes and impacts of surface changes along 244 transects. The results demonstrate that coastal erosion is responsible for widespread and archaeologically significant damage, with 48% of the studied transects showing erosion during the period 1973–2016. We elucidate significant temporal variations in the data and, most notably, demonstrate that continued drought since the early 2000s has impacted upon sediment supply to coastal areas, severely accentuating erosion. For instance, between 2003 and 2016, 70% of transects recorded shoreline retreat with worrying implications for the waterfront archaeology of Siraf. These quantitative results provide invaluable spatial information regarding the causes and impacts of erosion upon Siraf's waterfront heritage, in addition to furnishing a template for the protection of the city's internationally important cultural heritage.
Bibliographical noteFunding Information:
This work was supported by the Center of International Scientific Studies and Collaborations ( CISSC ), Iran National Science Foundation (INSF grant number 94-44915 ), the French Embassy in Iran, Campus France (PHC GUNDISHAPUR 2016–2017, project number 35630QH ) and Labex OT-Med ( ANR-11-LABX-0061 ).
© 2018 Elsevier Ltd
- Heritage management
- Persian Gulf
- Remote sensing
- Waterfront archaeology
ASJC Scopus subject areas
- Geography, Planning and Development
- Environmental Science (all)
- Tourism, Leisure and Hospitality Management