Abstract. The electric field induced in the Bolivia–Brazil gas pipeline (GASBOL) was calculated by using the distributed source line transmission (DSLT) theory during several space weather events. We used geomagnetic data collected by a fluxgate magnetometer located at Sao Jose dos Campos (23.2 ∘ S, 45.9 ∘ W). The total corrosion rate was calculated by using the Gummow (2002) methodology and was based on the assumption of a 1 cm hole in the coating of the pipeline. The calculations were performed at the ends of pipeline where the largest “out-of-phase” pipe-to-soil potential (PSP) variations were obtained. The variations in PSP during the 17 March 2015 geomagnetic storm have led to the greatest corrosion rate of the analyzed events. All the space weather events evaluated with high terminating impedance may have contributed to increases in the corrosion process. The applied technique can be used to evaluate the corrosion rate due to the high telluric activity associated with the geomagnetic storms at specific locations.

中文翻译：

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评估大地电流可能导致的腐蚀增强：玻利维亚-巴西管道的案例研究

摘要。玻利维亚-巴西天然气管道 (GASBOL) 中感应的电场是通过使用分布式源线传输 (DSLT) 理论在几次空间天气事件中计算出来的。我们使用了位于 Sao Jose dos Campos (23.2 ∘ S, 45.9 ∘ W) 的磁通门磁力计收集的地磁数据。总腐蚀速率是通过使用 Gummow (2002) 方法计算的，并基于管道涂层中 1 cm 孔的假设。计算是在管道末端进行的，在那里获得了最大的“异相”管地电位 (PSP) 变化。2015 年 3 月 17 日地磁风暴期间 PSP 的变化导致了所分析事件的最大腐蚀速率。用高终端阻抗评估的所有空间天气事件都可能导致腐蚀过程的增加。由于与特定位置的地磁暴相关的高大地活动，所应用的技术可用于评估腐蚀速率。