Abstract The purpose of this study was to characterize the Black Sea canyons associated with contrasting natural environmental conditions from two Black Sea basin regions: the northwestern/northern and the northeastern/eastern zones. The canyon-associated relief, the morphology of the continental shelf and the location of the canyon heads in the two Black Sea areas were analysed and compared. The canyon network reconstruction led to the conclusion that the canyon system pattern is different in the northwestern and northern Black Sea zones compared to the canyon system in the eastern Black Sea zone. Sediments in the deep sea fan areas were supplied in different manners by the canyon systems from the two marine study areas. According to the important different characteristics revealed by this study, the submarine canyons located in the northwestern/northern vs. the northeastern/eastern Black Sea zones appear as two distinct types, namely wide-shelf canyons and narrow-shelf canyons, with specific genetic and morphologic characteristics. The response to sea-level variation reveals an important distinction between the wide-shelf canyons and the narrow-shelf canyons. In highstand conditions, when the shelf is immersed, the wide-shelf canyons become inactive, whereas the narrow-shelf canyons are active in both lowstand and highstand conditions.

中文翻译：

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窄陆架峡谷与宽陆架峡谷：两种不同类型的黑海海底峡谷

摘要 本研究的目的是描述黑海峡谷与来自两个黑海盆地区域（西北/北部和东北/东部区域）的对比自然环境条件相关的特征。分析比较了黑海两个地区与峡谷相关的起伏、大陆架的形态和峡谷头的位置。峡谷网重建结果表明，黑海西北部和北部地区的峡谷系统格局与黑海东部地区的峡谷系统不同。深海扇区的沉积物由两个海洋研究区的峡谷系统以不同的方式提供。根据本研究揭示的重要不同特征，位于黑海西北部/北部与东北/东部黑海地区的海底峡谷呈现出两种截然不同的类型，即宽架峡谷和窄架峡谷，具有特定的遗传和形态特征。对海平面变化的响应揭示了宽架峡谷和窄架峡谷之间的重要区别。在高水位条件下，当陆架被淹没时，宽陆架峡谷变得不活跃，而窄架峡谷在低水位和高水位条件下都活跃。对海平面变化的响应揭示了宽架峡谷和窄架峡谷之间的重要区别。在高水位条件下，当陆架被淹没时，宽陆架峡谷变得不活跃，而窄架峡谷在低水位和高水位条件下都活跃。对海平面变化的响应揭示了宽架峡谷和窄架峡谷之间的重要区别。在高水位条件下，当陆架被淹没时，宽陆架峡谷变得不活跃，而窄架峡谷在低水位和高水位条件下都活跃。