Middle to Late Holocene (6,500 Yr. Period) Paleoclimate in the Eastern Mediterranean Region from Stable Isotopic Composition of Speleothems from Soreq Cave, Israel
Middle to Late Holocene (6,500 Yr. Period) Paleoclimate in the Eastern Mediterranean Region from Stable Isotopic Composition of Speleothems from Soreq Cave, Israel
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全新世中晚期（6,500 年）从以色列 Soreq 洞穴洞穴化石的稳定同位素组成分析东地中海地区的古气候
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发表时间：
1998
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通讯作者：
A. Kaufman
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作者：
M. Bar;A. Ayalon;A. Kaufman
以色列著名的旅游景点索雷克洞穴中的钟乳石和石笋提供了东地中海地区过去25，000年非常详细的气候记录（Bar-Matthews等人，1997 a）和58，000年（Bar-Matthews et al.，1997年b）。这些研究表明，距今约6,500年前的洞穴沉积物的同位素组成与现今的洞穴沉积物明显不同;大约6,500年前，洞穴沉积物的同位素组成与现今的洞穴沉积物相似。因此，大约6，500 BP之前东地中海地区的气候条件与现在有很大不同。只是从那时起，情况才变得与今天相似。Soreq洞穴是一系列喀斯特洞穴之一，位于朱迪亚山背斜陡峭的向西倾侧翼。Asaf（1975年）、Even等人（1986年）和Bar-Matthews等人（1991年）总结了其地质和水文背景及其环境。该洞穴位于距离以色列地中海海岸约40公里的内陆，海拔400米。目前，索雷克洞穴地区的气候属于典型的地中海半干旱气候，年平均气温约为20.5°C，洞穴水温在18.0至20.5°C之间变化（年平均降雨量约为500毫米）。该地区位于潮湿和干旱气候之间的狭窄过渡地带;轻微的气候变化，如年降雨量的变化，会影响到沙漠边界和过去的居民。
Stalactites and stalagmites in the Soreq Cave, a well known tourist attraction in Israel, provide a very detailed climatic record for the Eastern Mediterranean region during the last 25,000 years (Bar-Matthews et al., 1997a) and 58,000 years (Bar-Matthews et al., 1997b). These studies indicate that the isotopic compositions of speleothems that are older than about 6,500 BP are significantly different from those of present-day speleothems; and that about 6,500 years ago the isotopic composition of the speleothems became similar to that of today. Thus, the climatic conditions that prevailed in the Eastern Mediterranean area before ~ 6,500 BP were very different from now. Only from that time have the conditions become similar to those of the present day. Soreq Cave is one of a series of karstic caves situated within the steeply westward dipping flank of the Judean Hill anticline. Its geological and hydrological setting and its environment are summarized by Asaf (1975), Even et al. (1986) and Bar-Matthews et al. (1991). The cave is located approximately 40 km inland from the Israeli Mediterranean coast, and is 400 m above sea level. Presently, the climate in the Soreq Cave area is typical of the semi-arid Mediterranean type, with an average annual air temperature of ~20.5°C, a cave water temperature varying between 18.0 and 20.5°C (and a mean annual rainfall of ~500 mm). The area is located in a narrow transition zone between humid and arid climates; and slight climatic variations, such as changes in the annual rainfall, would have affected the desert boundary and the inhabitants in the past.