Electromagnetic Induction (EMI) data from a GF Instruments CMD-Explorer of project KARST in Antalya Bay (Türkiye)@en

We conducted EMI measurements along the Konyaaltı Beach in Antalya (Tükiye) on the 6th of March 2023. The EMI survey simultaneously collected two different types of data at multiple depth levels. An electromagnetic signal, transmitted into the ground, returns two signals, the Quadrature data (linked to the apparent electrical conductivity) and the In Phase data which is proportional to apparent magnetic susceptibility. The measurements were carried out with the GF Instruments CMD-Explorer (dipole centre distance: 1.48 m, 2.82 m and 4.49 m). The measuring device was attached to the operator and measurements were performed at walking speed at 10 Hz sampling frequency (~15 cm spacing between measurements). We collected two parallel profiles along Konyaaltı Beach, which were measured with two constant distances to the waterline (~15 m and ~45 m distance from the waterline). Anthropogenic constructions such as beach pavilions seem to influence the measurements along the upper profile while the profile closer to the waterline appears error-free.2023年3月6日，我们于土耳其安塔利亚的孔亚阿鲁提海滩（Konyaaltı Beach）开展了电磁感应（Electromagnetic Induction, EMI）测量作业。本次电磁感应测量可同步采集多深度层级下的两类数据。向地下发射的电磁信号会返回两路响应信号：正交数据（与视电导率相关）以及与视磁化率成正比的同相数据。本次测量采用GF Instruments公司的CMD-Explorer设备完成，其偶极中心间距分别为1.48米、2.82米与4.49米。该测量设备搭载于操作人员身上，以步行速度开展数据采集，采样频率为10 Hz，测点间距约15厘米。我们沿孔亚阿鲁提海滩布设了两条平行测线，两条测线与水岸线的固定距离分别约为15米与45米。人工搭建的海滩凉亭等构筑物似乎对距离水岸线更远的上方测线的测量结果造成了干扰，而更靠近水岸线的测线则未出现明显误差。