The Gulf of Cadiz has been affected by a long and complex geodynamic evolution. The lithospheric structure is poorly understood in this region, and it also shows a diffuse seismicity, spanning over a broad area. The Canary Archipelago has been extensively studied. Nevertheless, there are fundamental topics that are still under debate. No studies have addressed or suggested the possibility of a plausible geodynamic connection between both remarkable locations. In this study we integrate total tectonic subsidence (TTS), Curie point depth (CPD), Bouguer gravity anomaly, and seismic information. TTS shows the existence of a basement bulge in the area of the Canary Archipelago that extends to the north, and in the area of Madeira Island, which extends in a more subtle way to the north, too. Likewise, the CPD reaches the shallowest values in the same location at the Canary Archipelago. These two aspects suggest a cause-effect relationship between TTS and CPD at this specific area. Gravity data and CPD show a linear feature, which links the NW of the Canary Archipelago and the Gulf of Cadiz. The data we manage in this work show remarkable clues as: (a) the absence of a similar signal in the TTS, (b) the fact that CPD it is rather constant along this track, (c) CPD amplitude also almost doubles the values obtained on Canary Archipelago, and (d) the existence of a clear correlation between seismogenic depths and CPD, which points to the existence of a correlation between seismicity and the thermal architecture of the lithosphere. All of these evidences support the presence of a lithospheric thinning between Canary Islands and Gulf of Cádiz area, and in turn, the presence of an asthenospheric channel which feeds and alter locally the Eurasia–Africa Plate Boundary.

中文翻译：

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欧亚大陆-非洲板块边界受加的斯湾地区南大西洋软流圈通道的影响？

加的斯湾受到了漫长而复杂的地球动力学演化的影响。该地区的岩石圈结构知之甚少，而且还显示出广泛的地震活动性。加那利群岛已被广泛研究。尽管如此，仍有一些基本主题仍在辩论中。没有研究解决或暗示这两个显着位置之间存在合理的地球动力学联系的可能性。在这项研究中，我们整合了总构造沉降 (TTS)、居里点深度 (CPD)、布格重力异常和地震信息。TTS 显示，在向北延伸的加那利群岛地区和向北延伸的马德拉岛地区存在地下室隆起。同样地，CPD 在 Canary Archipelago 的同一位置达到最浅的值。这两个方面表明 TTS 和 CPD 在该特定区域之间存在因果关系。重力数据和 CPD 显示了一个线性特征，它将加那利群岛的西北和加的斯湾连接起来。我们在这项工作中管理的数据显示了显着的线索：(a) TTS 中没有类似的信号，(b) CPD 沿着这条轨道相当恒定，(c) CPD 幅度也几乎使值翻倍在加那利群岛上获得的数据，以及 (d) 发震深度和 CPD 之间存在明显的相关性，这表明地震活动性与岩石圈的热结构之间存在相关性。所有这些证据都支持加那利群岛和加的斯湾地区之间岩石圈变薄的存在，