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首页> 外文期刊>Estuarine Coastal and Shelf Science >Internal tidal waves and deep-water renewal in a tropical fjord: Lessons from Ambon Bay, eastern Indonesia
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Internal tidal waves and deep-water renewal in a tropical fjord: Lessons from Ambon Bay, eastern Indonesia

机译：热带峡湾中的内部潮汐和深水更新：来自印度尼西亚东部的Ambon Bay的课程

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摘要

Seasonal-varying internal tidal dynamics have a critical role in deep-water renewal in tropical shallow-silled fjords (e.g. Ambon Bay, Indonesia). Seasonal- and tidal-based longitudinal CTD casts from the slope of outer Ambon Bay (OAB) to the sill of Ambon Bay coupled with bottom-mounted current meters at the sill and in inner Ambon Bay (IAB, the fjord basin), were employed to investigate the internal tidal-sill slope interaction and the characteristics of deep-water inflow. Weaker stratification in the easterly monsoonal season than the transitional monsoonal season (dT/dz = -0.02 ?C/m cf. dT/dz = -0.06 ?C/m) drives the predominant sub-critical slope condition at the OAB slope causing more frequent tidal upwelling events in the easterly monsoonal season (13 events in a spring-neap sequence) than in the transitional monsoonal season (5 events). The magnitude of tidal upwelling in Ambon Bay, as measured by the depth from which water upwells, is stronger in the easterly monsoonal season (up to 200 m) than in the transitional monsoonal season (maximum: 115 m). The influx of upwelled water across the sill was controlled by the tidal excursion of the deep-water plume in the easterly monsoonal season and by the deep-water/sill density difference in the transitional monsoonal season. A series of deep-water renewal events in IAB within a spring-neap sequence (-2 weeks) in the easterly monsoonal season supplied a total inflow volume of 0.09 ? 0.02 km3 which can replenish approximately 80% volume of the IAB deep layer. This total inflow volume was smaller in the transitional monsoonal season (0.05 ? 0.01 km3), hence, only flushing 40% volume of the IAB deep layer. The knowledge of internal tidal waves and deep-water inflow in Ambon Bay presented here will be a key reference for future studies focused on water transport in Ambon Bay and other shallow-silled tropical fjords.
机译：季节变化的内部潮汐动态在热带浅滩峡湾（例如Ambon Bay，Indonesia）中的深水更新中具有关键作用。从外部Ambon Bay（OAB）的斜坡上的季节性和潮汐的纵向CTD铸造到Ambon Bay的窗口，加上窗台和内蒙布湾（IAB，峡湾盆地）的底部安装的电流表（IAB）。研究内部潮汐坡度相互作用及深水流入的特点。在东风季季季节中的分层较弱（DT / DZ = -0.02〜C / M CF.DZ = -0.06？C / M）驱动OAB斜率的主要亚临界斜率条件导致更多在东风季季季节（弹簧NeAP序列中的13个事件）频繁潮汐上升赛事（5个事件）。由水悬而未受欢迎的深度（最多200米）的潮汐湾在Ambon Bay中升值的潮汐升值的大小比过渡季季度（最大：115米）更强（最多200米）。窗台上的升温水的涌入由东风季季深水羽流的潮汐偏移控制，并通过过渡季风季节的深水/窗玻璃密度差异。在春天季季度春季序列（-2周）内的一系列深水更新事件在东风季季季节（-2周）提供的总流入量为0.09？ 0.02 km3，可以补充约80％的IAB深层体积。过渡季季季季节（0.05≤0.01km3），这种总流入量较小，因此只冲洗40％的IAB深层体积。在这里提供的Ambon Bay内部潮汐和深水流入的知识将是未来研究的关键参考，专注于Ambon Bay和其他浅景热带峡湾的水运输。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2021年第31期|107291.1-107291.13|共13页
  • 作者

    Salamena Gerry Giliant; Whinney James C.; Heron Scott F.; Ridd Peter V.;

  • 作者单位

    James Cook Univ Coll Sci & Engn Phys Sci Townsville Qld 4811 Australia|James Cook Univ Coll Sci & Engn Marine Geophys Lab Townsville Qld 4811 Australia|Indonesian Inst Sci LIPI Ctr Deep Sea Res CDSR Marine Phys Div Jalan Y Syaranamual Kota Ambon 97233 Provinsi Maluku Indonesia;

    James Cook Univ Coll Sci & Engn Marine Geophys Lab Townsville Qld 4811 Australia;

    James Cook Univ Coll Sci & Engn Phys Sci Townsville Qld 4811 Australia|James Cook Univ Coll Sci & Engn Marine Geophys Lab Townsville Qld 4811 Australia;

    34 Mango Ave Townsville Qld 4812 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Deep-water renewal; Tropical fjord; Internal tides; Flushing capacity; Ambon Bay;

    机译：深水续约;热带峡湾;内部潮汐;冲洗能力;安汶湾;

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