In tropical Africa, Late Pleistocene-Holocene climatic fluctuations heavily impacted the continental hydro-systems. The timing and magnitude of ‘African Humid Period’ hydrological dynamics (AHP; ~14.8 to ~5.5 ka BP) are not yet fully understood due to the extreme variability in African geomorphic patterns and the complex network of past air convergence boundary shifts. The investigation of the functioning of specific hydro-sedimentary basins is needed to improve our knowledge on the AHP spatial and chronological patterns over the continent. In this paper we present a revised Holocene lake level curve of Lake Abhe: an endorheic basin situated in the Afar Depression at the northern extremity of the East African Rift System (EARS). Located at the boundary of the Red Sea and the Indian and Atlantic Oceans' air moisture mass fluxes, the Lake Abhe watershed represents a system sensitive to changes in Northeast African hydro-climate. Based on numerous littoral lacustrine geomorphic features and 53 related radiocarbon ages on stromatolites and nearshore deposits, we have defined the main Holocene lake highstands proposing a detailed paleo-shoreline record. The first rise in water level is dated to ~11.1 ka cal. BP, while the Maximal Holocene Highstand Shoreline (~420 m a.s.l.) was rapidly reached around ~10 ka cal. BP. Evidence of the impact of the 8.2 ka North Atlantic cooling event is recognized with slow lake level regression until ~8.3 ka cal. BP and with an abrupt drop at ~8 ka cal. BP. The resurgence of humid conditions was recorded from ~7.7 ka cal. BP to ~4.6 ka cal. BP. Radiocarbon ages on littoral materials allow us to propose a Holocene subsidence rate of the Abhe basin axial valley. Furthermore, multiphase sill overflow incisions towards the downstream Hanle basin and transient fluvial connectivity with the upstream Ziway-Shala basin, indicate strong geomorphic controls on lake highstand elevations. In summary, Lake Abhe Holocene fluctuations are the result of combined hydro-climatic, tectonic and local geomorphic controls. However, the confrontation with others East African basins allows us to discuss the transport of moisture masses dynamics into the northern EARS during the Holocene.

在热带非洲，晚更新世-全新世气候波动严重影响了大陆水文系统。“非洲湿润期”水文动力学（AHP；~14.8 至~5.5 ka BP）的时间和幅度尚未完全了解，因为非洲地貌模式的极端可变性和过去空气汇聚边界变化的复杂网络。需要对特定水沉积盆地的功能进行调查，以提高我们对非洲大陆 AHP 空间和年代模式的了解。在本文中，我们提出了阿比湖全新世湖水位曲线的修正：一个位于东非裂谷系统 (EARS) 北端阿法尔凹陷的内陆盆地。位于红海与印度洋和大西洋的空气水分质量通量的边界处，阿比湖流域代表了一个对东北非水文气候变化敏感的系统。根据叠层石和近岸沉积物上的众多沿海湖泊地貌特征和 53 个相关的放射性碳年龄，我们确定了主要的全新世湖泊高位，提出了详细的古海岸线记录。水位的第一次上升可以追溯到~11.1 ka cal。BP，而最大全新世高位海岸线（~420 m asl）迅速达到~10 ka cal。BP。8.2 ka 北大西洋降温事件影响的证据通过缓慢的湖水位回归得到确认，直到~8.3 ka cal。BP 并在 ~8 ka cal 处突然下降。BP。从~7.7 ka cal 记录到潮湿条件的复苏。BP 至 ~4.6 ka cal。BP。沿海材料上的放射性碳年龄允许我们提出 Abhe 盆地轴向谷的全新世沉降率。此外，朝向下游汉乐盆地的多相基石溢流切口以及与上游紫薇-沙拉盆地的瞬时河流连通性表明对湖泊高位海拔的强烈地貌控制。总之，阿比湖全新世的波动是水文气候、构造和当地地貌综合控制的结果。然而，与其他东非盆地的对抗使我们能够讨论全新世期间湿气团动力学向北部 EARS 的传输。表明对湖泊高位海拔的强烈地貌控制。总之，阿比湖全新世的波动是水文气候、构造和当地地貌综合控制的结果。然而，与其他东非盆地的对抗使我们能够讨论全新世期间湿气团动力学向北部 EARS 的传输。表明对湖泊高位海拔的强烈地貌控制。总之，阿比湖全新世的波动是水文气候、构造和当地地貌综合控制的结果。然而，与其他东非盆地的对抗使我们能够讨论全新世期间湿气团动力学向北部 EARS 的传输。