Water level oscillations in Monterey Bay and Harbor
Summary: Seiches in coastal bays can produce significant water level oscillations that impact maritime operations and introduce ecological stress. Monterey Bay, California is found to have wave-driven short-period oscillations that can reinforce themselves resulting in water level amplification. At longer periods the oscillations are not wave-driven and several potential forcing mechanisms are examined. A gyre offshore the bay is suggested as the driver, while other potential drivers are discounted.
Exploring the isopycnal mixing and helium-heat paradoxes in a suite of Earth System Models
Summary: Many ocean circulation models use representations of lateral mixing based on instability theories that predict weak mixing in the ocean interior, much lower than observed. We show that using more realistic mixing improves the distribution of mantle helium-3. It does not, however, resolve the paradox that models reproduce the relationship between mantle helium and radiocarbon with flux of He-3 lower than is consistent with the heat leaving the mantle.
Seasonal variability of subsurface high salinity water in the northern South China Sea and its relationship with the northwestern Pacific currents
Summary: Here we investigated the seasonal variability of subsurface high salinity water (SHSW) in the northern South China Sea (SCS) and its relationship with the Northwestern Pacific Currents. Results give new insight into water exchange through the Luzon Strait (LS). The changes of western Pacific large scale circulation modulate the water exchange in the LS, and thus influence the SHSW in the interior SCS basin.
Reconstructing bottom water temperatures from measurements of temperature and thermal diffusivity in marine sediments
Summary: Temperature fields in marine sediments are mainly governed by the geothermal steady state heat flow and the bottom water temperature, which propagates into the sediment. Thus, the current sediments' temperature field stores the history of bottom water temperature variation. The aim of this work is the inverse modeling of the bottom water temperature variation from instantaneous measurements of the depth dependent temperature and the thermal diffusivity.
A wind-driven nonseasonal barotropic fluctuation of the Canadian Inland Seas
Summary: A wind-driven, spatially coherent mode of nonseasonal depth-independent variability in the Canadian Inland Seas is identified based on observational measurements and a numerical model over 2003-2013. This dominant mode of nonseasonal variability is partly related to the North Atlantic Oscillation. The mode is associated with net flows into and out of the Canadian Inland Seas as well as internal mass redistribution within the Canadian Inland Seas.
Transient tracer applications in the Southern Ocean
Summary: We use a suite transient Tracers measurements from aSouthern Ocean sector southeast of Africa collected from 1998 and 2012 to quantify ventilation, and change in ventilation. We found that the ventilation can be constrained by an Inverse Gaussian Transit time Distribution North of the Subantarctic Front. We do not find any significant changes in upper ocean Ventilation during this time-period.
Modelling survival and connectivity of Mnemiopsis leidyi in the southern North Sea and Scheldt estuaries
J. van der Molen, J. van Beek, S. Augustine, L. Vansteenbrugge, L. van Walraven, V. Langenberg, H. W. van der Veer, K. Hostens, S. Pitois, and J. Robbens Ocean Sci. Discuss., 11, 1561-1611, 2014 AbstractDiscussion Paper (PDF, 4555 KB)Interactive Discussion (Open, 2 Comments)Manuscript under review for OS