Acoustic Doppler current profiler observations during the coastal mixing and optics experiment : R/V Endeavor cruises from 14 August to 1 September 1996 and 25 April to 15 May 1997
01 Jan 1998-
About: The article was published on 1998-01-01 and is currently open access. It has received 2 citations till now. The article focuses on the topics: Acoustic Doppler current profiler & Mixing (physics).
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TL;DR: In this article, the shelf break front in the Mid Atlantic Bight was associated with chlorophyll enhancement along a hydrographic and a topographic feature, which was observed by a satellite instrument, the ocean color and temperature sensor, and by a fluorometer in situ.
Abstract: Meanders of the shelf break front in the Mid-Atlantic Bight (MAB) during April and May of 1997 were associated with chlorophyll enhancement along a hydrographic and a topographic feature. The hydrographic feature was the surface outcrop of the front, which ranged from ∼10 to >100 km seaward of the shelf break owing to the meanders. The topographic feature was the shelf break (100-m isobath). Chlorophyll enhancement was observed by a satellite instrument, the ocean color and temperature sensor, and by a fluorometer in situ. It developed in near-surface waters typically nutrient depleted during late spring, thus local nutrient enrichment of near-surface waters was probable. Observations of sufficient resolution to define processes were available only for the region of shelf break chlorophyll enhancement. Along two meander troughs (shoreward extremities near the shelf break), we observed shoaling of cold shelf water. Shelf water shoaled >20 m along frontal isopycnals, and phytoplankton absorption maxima coincided directly with the shoaled water. Thus local nutrient enrichment by along-isopycnal upwelling was the supported mechanism of chlorophyll enhancement at the shelf break. The basis for along-isopycnal upwelling was seaward flow of shelf water forced by meander circulation near the shelf break. Strong cross-isobath flow and mixing developed as these meanders propagated along the shelf break front of the MAB at a relatively constant rate of ∼9 km day−1.
54 citations
01 Jun 2000
TL;DR: The Coastal Mixing and Optics Experiment (CMOE Experiment) as discussed by the authors surveys on the continental shelf and slope in the Mid-Atlantic Bight south of Cape Cod, Massachusetts, USA were conducted aboard the R/V Endeavor during two physical oceanography cruises.
Abstract: : This data report includes documentation of the Coastal Mixing and Optics (CMO) Experiment inherent optical property surveys on the continental shelf and slope in the Mid-Atlantic Bight south of Cape Cod, Massachusetts, USA The surveys were conducted aboard the R/V Endeavor during two physical oceanography cruises: E9608 (14 August to 1 September 1996) and E9704 (25 April to 15 May 1997) The objective of the CMO Experiment was to rapidly survey a region in the Mid-Atlantic Bight (centered around 405 degrees North, 705 degrees West) to obtain three-dimensional, high-resolution measurements which would allow further elucidation of the length scales, distributions and relationships between hydrographic and optical properties This report describes the installation and deployment of the optical instrumentation as well as the data acquisition, data processing and editing of the inherent optical property data Vertical sections and maps of the inherent optical properties obtained from the surveys are also presented
3 citations