Sea level change and vertical land movements since the last two millennia along the coasts of southwestern Turkey and Israel
Sea level change and vertical land movements since the last two millennia along the coasts of southwestern Turkey and Israel
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DOI：
10.1016/j.quaint.2010.05.005
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发表时间：
2011-02-15
影响因子：
2.2
通讯作者：
Stocchi, R.
中科院分区：
文献类型：
--
作者：
Anzidei, M.;Antonioli, E.;Stocchi, R.
本文提供了新的相对海平面数据，这些数据来自位于土耳其费塞湾沿岸(8个遗址)和位于阿克齐夫和凯撒利亚之间的以色列(5个遗址)的沿海考古遗址。所选择的结构是那些为了有效发挥作用，可以准确地与建造时的海平面相关的结构。因此，它们相对于当前海平面的位置提供了自建造以来相对海平面变化的量度。从所调查的地点获得了有用的信息，年龄范围为2.3-1.6ka BP(类似)。据推测，这两个地区的相对海平面变化明显不同，土耳其从2.41米上升到4.50米，以色列从0米上升到0.18米。海平面变化是几个过程的组合，包括垂直构造、与上一次冰川周期有关的冰川水均衡信号以及海洋体积的变化。在以色列地段，目前MI-5.5第勒尼期阶地的高度比现在的海平面高出几米，垂直构造位移很小。GPS和验潮仪测量的数据也表明，最近的任何垂直运动都很小。在土耳其海岸的调查区段中没有MIS5.5海岸线，这与与希腊弧有关的地壳下沉一致。以色列海岸段的均衡信号也很小(根据地点和地球模型的不同，从-0.11毫米/年到0.14毫米/年不等)，在过去(类似)2ka期间，观测到的(海平面)平均海平面变化，经这一贡献校正后，上升了13.5+/-2.6厘米。这归因于热膨胀和海洋体积的其他增加对海平面的时间综合贡献。相比之下，从土耳其观测到的海平面显示，自2.3ka BP以来，克尼多斯和凯科瓦之间的大片地区的海平面上升幅度要大得多，最高可达2.2毫米/年。这里的均衡信号也是海平面上升(最高(类似)1 mm/年，取决于场地和地球模型)的信号之一，修正后的地面沉降构造速率(类似)为1.48 mm/年。这是这部分海岸相对海平面急剧上升的主要原因。(C)2010年爱思唯尔有限公司和INQUA。版权所有。
This paper provides new relative sea level data inferred from coastal archaeological sites located along the Turkish coasts of the Gulf of Fethye (8 sites), and Israel, between Akziv and Caesarea (5 sites). The structures selected are those that, for effective functioning, can be accurately related to sea level at the time of their construction. Thus their positions with respect to present sea level provide a measure of the relative sea level change since their time of construction. Useful information was obtained from the investigated sites spanning an age range of(similar to)2.3-(similar to)1.6 ka BP. The inferred changes in relative sea level for the two areas are distinctly different, from a rise of 2.41 to 4.50 m in Turkey and from 0 to 0.18 m in Israel. Sea level change is the combination of several processes, including vertical tectonics, glacio-hydro-isostatic signals associated with the last glacial cycle, and changes in ocean volume. For the Israel section, the present elevations of the MIS-5.5 Tyrrhenian terraces occur at a few meters above present sea level and vertical tectonic displacements are small. Data from GPS and tide gauge measurements also indicate that any recent vertical movements are small. The MIS-5.5 shorelines are absent from the investigated section of the Turkish coast, consistent with crustal subsidence associated with the Hellenic Arc. The isostatic signals for the Israel section of the coast are also small (ranging from -0.11 mm/yr to 0.14 mm/yr, depending on site and earth model) and the observed (eustatic) average sea level change, corrected for this contribution, is a rise of 13.5 +/- 2.6 cm during the past (similar to)2 ka. This is attributed to the time-integrated contribution to sea level from a combination of thermal expansion and other increases in ocean volume. The observed sea levels from the Turkish sites, in contrast, indicate a much greater rise of up to 2.2 mm/yr since 2.3 ka BP occurring in a wide area between Knidos and Kekova. The isostatic signal here is also one of a rising sea level (of up to (similar to)1 mm/yr and site and earth-model dependent) and the corrected tectonic rate of land subsidence is (similar to)1.48 mm/yr. This is the primary cause of dramatic relative sea level rise for this part of the coast. (c) 2010 Elsevier Ltd and INQUA. All rights reserved.