CAJ | 학술논문

针对全新世大暖期古海岸线位置的不确定性问题，提出了一种利用探地雷达进行最大海侵位置追踪的方法，在探地雷达可获得连续沉积地层图像的理论基础上，在具有丰富研究资料的莱州湾东岸开展了实验研究。结果表明，利用Mala RAMAC100MHz天线结合相应的图像处理手段，能够识别区域10 m以内浅地层中海陆相沉积物分界面，与已有钻孔和现场探挖浅孔剖面对比，具有较好的一致性。证实了利用探地雷达追踪全新世海侵时期古地层、将海相层尖灭点处确定为最大海侵线位置，进一步恢复古环境是可行的。本文为研究古海岸线位置提供的方法，即通过探地雷达探测地层，得到高清的可视化图像，这使得古海岸线位置确定更精确、更直观。
침대전신세대난기고해안선위치적불학정성문제，제출료일충이용탐지뢰체진행최대해침위치추종적방법，재탐지뢰체가획득련속침적지층도상적이론기출상，재구유봉부연구자료적래주만동안개전료실험연구。결과표명，이용Mala RAMAC100MHz천선결합상응적도상처리수단，능구식별구역10 m이내천지층중해륙상침적물분계면，여이유찬공화현장탐알천공부면대비，구유교호적일치성。증실료이용탐지뢰체추종전신세해침시기고지층、장해상층첨멸점처학정위최대해침선위치，진일보회복고배경시가행적。본문위연구고해안선위치제공적방법，즉통과탐지뢰체탐측지층，득도고청적가시화도상，저사득고해안선위치학정경정학、경직관。
This work determined Holocene transgressive boundary by using ground penetrating radar (GPR), based on the theory that GPR image can obtain continuous sedimentary strata. The experimental study was carried out in the east coast of the Laizhou Bay that has a plenty of historical research data. The results show that the interface of marine and terrestrial sediments in the shallow strata within 10 m in the study area was identified by the Mala RAMAC 100 MHz antenna acquisition, which is consistent with the profiles of historical borehole data and field sampling well. It is confirmed that the method can be used to determine the maximum transgression position and recover the paleo-environment by using GPR to trace paleo-formation in the period of Holocene transgression. In conclusion, this study provides the method for research of paleo-coastline position, and makes paleo-coastline position more precise and intuitive through using GPR to survey formation and get visual images with high resolution.