...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Volcanology and Geothermal Research2012V243-244NOCT,15 >Gas emissions and crustal deformation from the Krysuvik high temperature geothermal system, Iceland
【24h】

Gas emissions and crustal deformation from the Krysuvik high temperature geothermal system, Iceland

机译：冰岛Krysuvik高温地热系统的气体排放和地壳变形

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

The Krysuvik volcanic system is located on the oblique spreading Reykjanes Peninsula, SW Iceland. Since early 2009 the region has been undergoing episodes of localized ground uplift and subsidence. From April-November 2013, we operated near-real time monitoring of gas emissions in Krysuvik, using a Multi-component Gas Analyzer System (Multi-GAS), collecting data on gas composition from a fumarole (H2O, CO2, SO2, H2S). The dataset in this study, comprises a near-continuous gas composition time series, the quantification of diffuse CO2 gas flux, analytical results for direct samples of dry gas, seismic records, and GPS data. Gas emissions from the Krysuvik geothermal system were examined and compared with crustal deformation and seismicity.The gas emissions from the Krysuvik system are H2O-dominated, with CO2 as the most abundant dry gas species, followed by smaller concentrations of H2S. The average subsurface equilibrium temperature was calculated as 278 degrees C. This is consistent with previous observations made through sporadic spot sampling campaigns. In addition, the semi-continuous Multi-GAS dataset reveals higher variations in gas composition than previously reported by spot sampling.The diffuse soil CO2 flux is found to be variable between the three studied degassing areas in Krysuvik, ranging from 10.9-70.9T/day, with the highest flux in Hveradalir where the Multi-GAS station is located. The total flux is estimated as 101 T/day.Comparison between Multi-GAS and geophysical data shows that peaks of H2O-rich emissions appears to follow crustal movements. Coinciding with the H2O-rich peaks, SO2 is detected in minor amounts (similar to 0.6 ppmv), allowing for calculations of H2O/SO2, CO2SO2 and H2S/SO2 ratios. This is the first time SO2 has been detected in the Krysuvik area.The large variations in H2O/CO2 and H2O/H2S ratios are considered to reflect variable degassing activity in the fumarole. The activity of the fumarole appears less intense during intervals of low or no recorded seismic events. The H2O/CO2 and H2O/H2S ratios are lower, presumably due to H2O condensation affecting the steam jet before reaching the Multi-GAS inlet tube. (C) 2018 Elsevier B.V. All rights reserved.
机译：Krysuvik火山系统位于冰岛西南部雷克雅内斯半岛斜向蔓延的地方。自2009年初以来，该地区经历了局部地面隆起和沉陷。从2013年4月至11月，我们使用多组分气体分析仪系统（Multi-GAS）对Krysuvik的气体排放进行了近实时监测，收集了来自富马酚（H2O，CO2，SO2，H2S）的气体成分数据。本研究中的数据集包括近乎连续的气体成分时间序列，弥散的CO2气体通量的定量，干气直接样品的分析结果，地震记录和GPS数据。检查了Krysuvik地热系统的气体排放并将其与地壳变形和地震活动性进行了比较.Krysuvik系统的气体排放以H2O为主，其中CO2是最丰富的干燥气体种类，其次是H2S浓度较低。平均地下平衡温度经计算为278摄氏度。这与以前通过零星点采样活动所做的观察一致。此外，半连续的Multi-GAS数据集显示的气体成分变化比以前通过现场采样报告的要高。在Krysuvik的三个研究脱气区域之间，扩散的土壤CO2通量是可变的，范围为10.9-70.9T /当天，Multi-GAS站所在的赫韦拉达利流量最高。总通量估计为101 T /day。Multi-GAS与地球物理数据的比较表明，富H2O排放的峰值似乎跟随地壳运动。与富含H2O的峰一致，检测到的SO2含量很少（类似于0.6 ppmv），从而可以计算H2O / SO2，CO2SO2和H2S / SO2的比率。这是首次在Krysuvik地区检测到SO2，H2O / CO2和H2O / H2S比率的巨大差异被认为反映了富马酚中可变的脱气活性。在低或没有记录到的地震事件的间隔中，喷气孔的活动强度降低。 H2O / CO2和H2O / H2S比率较低，可能是由于H2O冷凝影响了到达Multi-GAS入口管之前的蒸汽射流。 （C）2018 Elsevier B.V.保留所有权利。

著录项

  • 来源
  • 作者

  • 作者单位

    Univ Iceland Inst Earth Sci Sturlugata 7 IS-101 Reykjavik Iceland|Iceland GeoSurvey Grensasvegur 9 IS-108 Reykjavik Iceland;

    Iceland Meteorol Off Bustaoarvegi 7-9 IS-108 Reykjavik Iceland|Univ Leeds Sch Earth & Environm Leeds LS7 4LR W Yorkshire England|British Geol Survey Lyell Ctr Edinburgh EH14 4AP Midlothian Scotland;

    Univ Iceland Inst Earth Sci Sturlugata 7 IS-101 Reykjavik Iceland|GNS Sci POB 30368 Lower Hutt 5040 New Zealand;

    Iceland Meteorol Off Bustaoarvegi 7-9 IS-108 Reykjavik Iceland;

    Univ Iceland Inst Earth Sci Sturlugata 7 IS-101 Reykjavik Iceland;

    Univ Palermo DiSTeM Palermo Italy;

    Iceland GeoSurvey Grensasvegur 9 IS-108 Reykjavik Iceland;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Krysuvik; Volcanic gas; Volcano monitoring; Geothermal gas; Crustal deformation; Volcanic CO2 flux;

    机译：克吕苏维克火山气火山监测;地热气;地壳变形;火山二氧化碳通量;

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