We investigated three coastal archaeological sites along the coast of Fethiye (south‐western Turkey, eastern Mediterranean) to reveal relative sea‐level changes that have occurred since early Byzantine times. Focusing on this little known period, the most recent archaeological data are presented here, providing new data for the history of sea‐level changes. Current elevations of submerged archaeological remains relative to present sea level were measured, and relative sea‐level change was determined, based on an approximation of the original elevation. The contemporary archaeological structures revealed three different sea levels in adjacent areas. Taking into account the time of the last use of the structures, instead of their time of construction, we suggest a relative sea‐level rise at a minimum rate of 1.6 ± 0.3 mm/year for Şövalye Island, 2.1 ± 0.3 mm/year for Gemiler Island, and 2.2 ± 0.6 mm/year for Ölüdeniz Lagoon for the last 1400 years. A comparison of the study results and geoarchaeological data from nearby sites on the western coasts of Fethiye Gulf revealed the degree of sea‐level change impact upon coastal archaeological sites. Results demonstrate that the seismically active Fethiye coast has been strongly influenced by the vertical tectonic movement since early Byzantine times.

中文翻译：

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根据最近的考古数据，费特希耶海岸（土耳其西南）的相对海平面变化

我们调查了费特希耶（土耳其西南部，地中海东部）沿岸的三个沿海考古遗址，以揭示自拜占庭初期以来发生的相对海平面变化。针对这个鲜为人知的时期，这里介绍了最新的考古数据，为海平面变化的历史提供了新的数据。测量了相对于当前海平面的淹没考古遗迹的当前海拔，并根据原始海拔的近似值确定了相对海平面的变化。当代的考古结构揭示了相邻地区的三种不同的海平面。考虑到最后一次使用结构的时间，而不是建造时间，我们建议Şövalye岛2的相对海平面上升的最低速率为1.6±0.3 mm /年。在过去的1400年中，Gemiler岛每年1±0.3毫米，ÖlüdenizLagoon每年2.2±0.6毫米。将研究结果与费特希耶湾西海岸附近地点的地质考古数据进行比较，发现海平面变化对沿海考古地点的影响程度。结果表明，自拜占庭早期以来，地震活跃的费特希耶海岸一直受到垂直构造运动的强烈影响。