Investigation of Kula Volcanic Field (Türkiye) Through the Inversion of Aeromagnetic Anomalies Using Success-History-Based Adaptive Differential Evolution with Exponential Population Reduction Strategy

IF 1.9 4区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS
Yunus Levent Ekinci, Çağlayan Balkaya, Hanbing Ai, Arka Roy, Şenol Özyalin
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Abstract

The Kula Field is the youngest volcanic center in western Türkiye, and consists of various well-preserved volcanic products. Although many geological studies have been conducted in the region, geophysical anomalies have not been studied in detail. Therefore, we analyzed the aeromagnetic anomalies of these volcanic products by performing inversion studies with a recently proposed global optimizer. This study is the first attempt to use success-history-based adaptive differential evolution algorithm (SHADE) for inverting magnetic anomalies. To reduce the computational cost, we introduced the E-SHADE scheme by incorporating an exponential population reduction strategy into the optimizer. A synthetic anomaly study revealed the mathematical nature of the handled inverse problem. Some pre- and post-inversion analyses showed the efficiency of the proposed algorithm. Additionally, we observed that the E-SHADE algorithm produced better results than a commonly used derivative-based local optimizer. Nine profile data sets including magnetic anomalies of some volcanic cones in the Kula region were inverted. It was determined that the basaltic intrusions that allow the mantle material to uplift rapidly are not very deep in the subsurface. Therefore, it is possible that the three-phased volcanism may become active again and generate new alkaline basaltic lava flows in a new phase through these shallow dykes.

Abstract Image

利用基于成功历史的自适应差分进化与指数种群减少策略,通过反演气磁异常调查库拉火山场(土耳其
库拉油田是图尔基耶西部最年轻的火山中心,由各种保存完好的火山产物组成。虽然对该地区进行了许多地质研究,但尚未对地球物理异常进行详细研究。因此,我们利用最近提出的全局优化器进行反演研究,分析了这些火山岩产品的气磁异常。这项研究首次尝试使用基于成功历史的自适应微分进化算法(SHADE)来反演磁异常。为了降低计算成本,我们引入了 E-SHADE 方案,在优化器中加入了指数种群减少策略。一项合成异常研究揭示了所处理的反演问题的数学本质。一些反转前和反转后的分析表明了所提算法的效率。此外,我们还发现 E-SHADE 算法比常用的基于导数的局部优化器产生了更好的结果。我们反演了九组剖面数据,包括库拉地区一些火山锥的磁异常。结果表明,使地幔物质迅速隆起的玄武岩侵入体在地下不是很深。因此,三相火山活动有可能再次活跃起来,并在新的阶段通过这些浅层堤坝产生新的碱性玄武岩熔岩流。
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来源期刊
pure and applied geophysics
pure and applied geophysics 地学-地球化学与地球物理
CiteScore
4.20
自引率
5.00%
发文量
240
审稿时长
9.8 months
期刊介绍: pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys. Long running journal, founded in 1939 as Geofisica pura e applicata Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research Coverage extends to research topics in oceanic sciences See Instructions for Authors on the right hand side.
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