Assimilation of acoustic thermometry data in Fram Strait

2021 ◽  
Vol 149 (4) ◽  
pp. A90-A91
Author(s):  
Florian Geyer ◽  
Ganesh Gopalakrishnan ◽  
Hanne Sagen ◽  
Bruce Cornuelle ◽  
Matthew M. Mazloff
Keyword(s):  
Fram Strait ◽  
Acoustic Thermometry

Use of Acoustic Thermometry to Determine the Temperature Field in the Human Forearm

2019 ◽  
Vol 65 (4) ◽  
pp. 460-465
Author(s):  
A. A. Anosov ◽  
A. V. Erofeev ◽  
A. D. Mansfel’d
Keyword(s):  
Temperature Field ◽  
Acoustic Thermometry ◽  
Human Forearm

scholarly journals Eddy‐driven recirculation of Atlantic Water in Fram Strait

2016 ◽  
Vol 43 (7) ◽  
pp. 3406-3414 ◽  
Author(s):  
Tore Hattermann ◽  
Pål Erik Isachsen ◽  
Wilken‐Jon Appen ◽  
Jon Albretsen ◽  
Arild Sundfjord
Keyword(s):  
Atlantic Water ◽  
Fram Strait

scholarly journals Deep Ocean storage of heat and CO2 in the Fram Strait, Arctic Ocean during the last glacial period

2021 ◽  
Author(s):  
Mohamed M. Ezat ◽  
Tine L. Rasmussen ◽  
Mathis P. Hain ◽  
Mervyn Greaves ◽  
James W B Rae ◽  
...  
Keyword(s):  
Arctic Ocean ◽  
Deep Ocean ◽  
Fram Strait ◽  
Glacial Period ◽  
Last Glacial Period ◽  
Last Glacial ◽  
The Last Glacial

scholarly journals Seasonal patterns in Arctic planktonic metabolism (Fram Strait – Svalbard region)

2013 ◽  
Vol 10 (3) ◽  
pp. 1451-1469 ◽  
Author(s):  
R. Vaquer-Sunyer ◽  
C. M. Duarte ◽  
J. Holding ◽  
A. Regaudie-de-Gioux ◽  
L. S. García-Corral ◽  
...  
Keyword(s):  
Arctic Ocean ◽  
Early Spring ◽  
The Arctic ◽  
Fram Strait ◽  
Metabolic Rates ◽  
Net Community Production ◽  
Western Sector ◽  
The Arctic Ocean ◽  
European Arctic ◽  
Community Production

Abstract. The metabolism of the Arctic Ocean is marked by extremely pronounced seasonality and spatial heterogeneity associated with light conditions, ice cover, water masses and nutrient availability. Here we report the marine planktonic metabolic rates (net community production, gross primary production and community respiration) along three different seasons of the year, for a total of eight cruises along the western sector of the European Arctic (Fram Strait – Svalbard region) in the Arctic Ocean margin: one at the end of 2006 (fall/winter), two in 2007 (early spring and summer), two in 2008 (early spring and summer), one in 2009 (late spring–early summer), one in 2010 (spring) and one in 2011 (spring). The results show that the metabolism of the western sector of the European Arctic varies throughout the year, depending mostly on the stage of bloom and water temperature. Here we report metabolic rates for the different periods, including the spring bloom, summer and the dark period, increasing considerably the empirical basis of metabolic rates in the Arctic Ocean, and especially in the European Arctic corridor. Additionally, a rough annual metabolic estimate for this area of the Arctic Ocean was calculated, resulting in a net community production of 108 g C m−2 yr−1.

scholarly journals Resolution, identification, and stability of broadband acoustic arrivals in Fram Strait

2017 ◽  
Vol 141 (3) ◽  
pp. 2055-2068 ◽  
Author(s):  
Hanne Sagen ◽  
Peter F. Worcester ◽  
Matthew A. Dzieciuch ◽  
Florian Geyer ◽  
Stein Sandven ◽  
...  
Keyword(s):  
Fram Strait

ATOC and Other Acoustic Thermometry Observations In New Zealand

1999 ◽  
Vol 33 (1) ◽  
pp. 55-60
Author(s):  
C.T. Tindle ◽  
G.E.J.
Keyword(s):  
New Zealand ◽  
Ocean Bottom ◽  
Underwater Sound ◽  
Floating Platform ◽  
Ocean Climate ◽  
Acoustic Thermometry ◽  
Tasman Sea ◽  
Heard Island ◽  
Large Fluctuations ◽  
Feasibility Test

A summary of participation of the New Zealand group in the ATOC (Acoustic Thermometry of Ocean Climate) program over a five year period is presented. Transmissions from Heard Island were observed in the Tasman Sea during the Heard Island Feasibility Test in 1991. The California-New Zealand underwater sound path was verified with explosive sources in 1992. Single hydrophone observations were made of transmissions to New Zealand from California from an electrically driven source first suspended beneath a floating platform in 1994 and later placed on the ocean bottom at Pioneer Seamount in 1995. Results from these experiments show that acoustic propagation to ranges of order 10 Mm appears to be characterised by large fluctuations occurring with a time scale of a few minutes.

scholarly journals Tidally induced lateral dispersion of the Storfjorden overflow plume

Ocean Science ◽  
2013 ◽  
Vol 9 (5) ◽  
pp. 885-899 ◽  
Author(s):  
F. Wobus ◽  
G. I. Shapiro ◽  
J. M. Huthnance ◽  
M. A. M. Maqueda ◽  
Y. Aksenov
Keyword(s):  
Ocean Circulation ◽  
Circulation Model ◽  
Bottom Layer ◽  
Horizontal Resolution ◽  
Open Boundary ◽  
Coastal Current ◽  
Fram Strait ◽  
Open Boundary Conditions ◽  
Shear Dispersion ◽  
Set Up

Abstract. We investigate the flow of brine-enriched shelf water from Storfjorden (Svalbard) into Fram Strait and onto the western Svalbard Shelf using a regional set-up of NEMO-SHELF, a 3-D numerical ocean circulation model. The model is set up with realistic bathymetry, atmospheric forcing, open boundary conditions and tides. The model has 3 km horizontal resolution and 50 vertical levels in the sh-coordinate system which is specially designed to resolve bottom boundary layer processes. In a series of modelling experiments we focus on the influence of tides on the propagation of the dense water plume by comparing results from tidal and non-tidal model runs. Comparisons of non-tidal to tidal simulations reveal a hotspot of tidally induced horizontal diffusion leading to the lateral dispersion of the plume at the southernmost headland of Spitsbergen which is in close proximity to the plume path. As a result the lighter fractions in the diluted upper layer of the plume are drawn into the shallow coastal current that carries Storfjorden water onto the western Svalbard Shelf, while the dense bottom layer continues to sink down the slope. This bifurcation of the plume into a diluted shelf branch and a dense downslope branch is enhanced by tidally induced shear dispersion at the headland. Tidal effects at the headland are shown to cause a net reduction in the downslope flux of Storfjorden water into the deep Fram Strait. This finding contrasts previous results from observations of a dense plume on a different shelf without abrupt topography.

Sign in / Sign up

Export Citation Format

Share Document