...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Rate of diffuse carbon dioxide Earth degassing estimated from carbon balance of regional aquifers: The case of central Apennine, Italy
【24h】

Rate of diffuse carbon dioxide Earth degassing estimated from carbon balance of regional aquifers: The case of central Apennine, Italy

机译：根据区域含水层的碳平衡估算的地球上的二氧化碳扩散速度：以意大利亚平宁中部为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Central Italy is characterized by an anomalous flux of deeply derived CO2. In the western Tyrrhenian sector of central Italy, CO2 degassing occurs mainly from focused emissions (vents and strong diffuse degassing) and thermal springs, whereas in the eastern Apennine area, deep CO2 is dissolved in "cold" groundwaters of regional aquifers hosted by Mesozoic carbonate-evaporite formations. Influx of deep CO2 into 12 carbonate aquifers (12,500 km(2)) of the central Apennine is computed through a carbon mass balance that couples aquifer geochemistry with isotopic and hydrogeological data. Mass balance calculations estimate that 6.5x10(10) mol yr(-1) of inorganic carbon are dissolved in the studied aquifers. Approximately 23% of this amount derives from biological sources active during the infiltration of the recharge waters, 36% comes from carbonate dissolution, while 41% is representative of deep carbon sources characterized by a common isotopic signature (delta(13)C congruent to-3 parts per thousand). The calculated deep CO2 influx rate ranges from 10(5) to 10(7) mol yr(-1) km(-2), increasing regionally from east to west in the study area. [References: 47]
机译：意大利中部的特征是深层吸收的CO2异常通量。在意大利中部西部第勒尼安地区，CO2脱气主要来自集中的排放物（排气和强烈的扩散脱气）和温泉，而在亚平宁东部地区，深的CO2溶解在中生碳酸盐岩所带的区域含水层的“冷”地下水-蒸发岩层。通过将碳层平衡与同位素和水文地质数据相结合的碳质量平衡，可以计算出深部CO2流入中央亚平宁的12个碳酸盐含水层（12,500 km（2））。质量平衡计算估计出6.5x10（10）mol yr（-1）的无机碳溶解在研究的含水层中。其中约23％来自补给水渗透过程中活跃的生物来源，36％来自碳酸盐溶解，而41％代表具有共同同位素特征（δ（13）C与-千分之三）。计算得出的深层CO2涌入率范围为10（5）至10（7）mol yr（-1）km（-2），在研究区域内从东向西呈区域性增加。 [参考：47]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号