Multibeam bathymetric imagery and acoustic sub-bottom profiles are used to reveal distribution patterns of sub-surface sedimentation in Dove Basin (Scotia Sea). The goals of the study are to determine the imprint of the inflow of deep Antarctic water masses from the Weddell Sea into the Scotia Sea, to establish the factors driving the styles of contourite deposition and to discern the relative contribution of alongslope versus downslope processes to the construction of the uppermost late Quaternary sedimentary record in the basin.

The most significant morpho-sedimentary features in Dove Basin are linked to contouritic processes and to mass movements. Plastered drifts on the flanks of the basin constitute the most common contouritic deposits. Basement-controlled drifts on top of structural elevations are common along the central ridge, the central basin plain and scattered along the basin flanks. Sheeted drifts occur on top of adjacent banks or are restricted to the deep basin. In contrast, mounded drifts are poorly represented in Dove basin. A laterally extensive contouritic channel runs along the central ridge. Contouritic channels are also identified in the upper parts of the lateral banks and slopes. Numerous slide scars along the upper parts of the slopes evolve downslope into semitransparent lens-shaped bodies, with occasional development of across-slope channels. Semitransparent lenses occur intercalated within stratified deposits in the slopes of the basin, in the central ridge and in the deepest basin plain.

The spatial arrangement of contouritic morphologies points to the influence of the water column structure and the basin physiography. In the eastern sub-basin, two different fractions (lower and upper) of Weddell Sea Deep Water (WSDW) leave an imprint on contourite deposits owing to the sloping interface between the two fractions. Contouritic influence is more subdued in the western sub-basin, and limited to the imprint of the lower WSDW. The upper parts of the surrounding banks are under the influence of deep-reaching Circumpolar waters (i.e., Lower Circumpolar Deep Water), which develops both depositional and erosional morphologies. The cross-section V-shaped morphology of the basin and the common occurrence of structural highs drive the predominance of plastered and basement-controlled drifts in the sediment record. The frequent alternation between contourites and downslope gravity-flow deposits is likely due to different processes associated with over-steepening in the basin, such as basement-controlled steep slopes, deformed drifts atop basement elevations, and the development of thick contouritic piles. Dove Basin is an example of a basin without mounded, plastered or mixed hybrid drifts in the transition between the lower slope and the deep basin, because the upper boundary of the deepest water mass —the Weddell Sea Deep Water— flows shallower along the middle slope. This fact underlines the relevance of the position and depth of water masses in shaping the morphology of the feet of slopes along continental margins.

多波束测深图像和声学海底剖面用于揭示鸽子盆地（斯科舍海）的地下沉积分布模式。该研究的目标是确定南极深水团从威德尔海流入斯科舍海的印记，确定驱动等高岩沉积类型的因素，并辨别沿坡与下坡过程对盆地晚第四纪最上层沉积记录的构建.

Dove Basin 中最重要的形态沉积特征与等高线过程和质量运动有关。盆地两侧的灰泥沉积物构成了最常见的等高岩沉积物。构造高程顶部的基底控制的漂移沿中央脊、中央盆地平原和沿盆地两侧分散分布。片状漂移发生在相邻河岸的顶部或仅限于深盆。相比之下，在 Dove 盆地中，丘状漂流的代表性较差。一条横向延伸的等高线通道沿着中央山脊延伸。在侧岸和斜坡的上部也发现了轮廓通道。沿斜坡上部的许多滑痕沿斜坡向下演化成半透明的透镜状体，偶尔出现跨斜坡通道。

等高线形态的空间排列表明水体结构和盆地地貌的影响。在东部子盆地，威德尔海深水 (WSDW) 的两个不同部分（下部和上部）由于两个部分之间的倾斜界面而在等高岩沉积物上留下印记。西部次盆地的轮廓影响更弱，并且仅限于下 WSDW 的印记。周围河岸的上部受深部环极水（即下环极深水）的影响，形成沉积和侵蚀两种形态。盆地的横截面 V 形形态和构造高点的普遍出现推动了沉积物记录中灰泥和基底控制的漂移的优势。等高岩和下坡重力流沉积物之间的频繁交替可能是由于与盆地过度陡峭相关的不同过程造成的，例如基底控制的陡坡、基底高程顶部的变形漂移以及厚等高桩的发展。鸽子盆地是一个在下斜坡和深盆地之间的过渡中没有丘陵、泥浆或混合漂移的盆地的例子，因为最深水团的上边界——威德尔海深水——沿着中间斜坡流得更浅. 这一事实强调了水团的位置和深度在塑造大陆边缘斜坡脚的形态方面的相关性。例如地下室控制的陡坡、地下室高程上的变形漂移以及厚等高桩的发展。鸽子盆地是一个在下斜坡和深盆地之间的过渡处没有丘陵、泥浆或混合混合漂移的盆地的例子，因为最深水团的上边界——威德尔海深水——沿着中间斜坡流得更浅. 这一事实强调了水团的位置和深度在塑造大陆边缘斜坡脚的形态方面的相关性。例如地下室控制的陡坡、地下室高程上的变形漂移以及厚等高桩的发展。鸽子盆地是一个在下斜坡和深盆地之间的过渡处没有丘陵、泥浆或混合混合漂移的盆地的例子，因为最深水团的上边界——威德尔海深水——沿着中间斜坡流得更浅. 这一事实强调了水团的位置和深度在塑造大陆边缘斜坡脚的形态方面的相关性。因为最深的水团的上边界——威德尔海深水——沿着中间斜坡流得更浅。这一事实强调了水团的位置和深度在塑造大陆边缘斜坡脚的形态方面的相关性。因为最深的水团的上边界——威德尔海深水——沿着中间斜坡流得更浅。这一事实强调了水团的位置和深度在塑造大陆边缘斜坡脚的形态方面的相关性。