Physical Oceanography, Vol.
EXPERIMENTAL AND FIELD RESEARCH
WATER STRUCTURE AND KINEMATICS IN THE REGION OF
THE ARGENTINE ISLANDS ARCHIPELAGO IN MARCH–APRIL 2000
N. P. Bulgakov, P. D. Lomakin, Yu. V. Artamonov,
S. I. Kondrat’ev, and A. I. Chepyzhenko
UDC 551.46 (265.7)
On the basis of the data of a comprehensive oceanographic experiment carried out in the course
of the fifth national expedition to Antarctica in March–April 2000, we study the structure and ki-
nematics of waters in the region of the Argentine Islands, where the “Akademik Vernadskii” Uk-
rainian Antarctic Station is located. We study the regularities of the thermohaline stratification
of waters, the characteristics of the field of dissolved oxygen, and the distribution of the light at-
tenuation coefficient. The data on tidal and residual currents are also presented.
In the present work, we analyze the data of oceanographic investigations of the water area of the Argentine
Islands, where the “Akademik Vernadskii” Ukrainian Antarctic Station is located. The investigations were car-
ried out in the course of the fifth Ukrainian Antarctic expedition on
In the course of these investigations we studied (a) the structure and variability of the fields of hydrophysi-
cal, hydrodynamical, hydrochemical, and hydrooptical parameters, i.e., the most important components of the
ecological complex of the environment, and (b) the regularities of the system of local currents (with the goal of
supplementing the existing sailing directions for this region with new data and supply vessels of national expedi-
tions with navigational information).
The observations were carried out in the coastal waters of the Galindez Island where the station is located,
in the Meek Channel (the sole shipway in the interisland zone whose waters wash the north part of the Galindez
Island and the south coasts of the Grotto and Corner Islands), and in the water area to the north of the archipe-
lago. The depth of the investigated regions varies within the range
Since March 30 till April 3, five autonomous MGI-1308 current recorders were placed in the water area of
the interisland zone from aboard an anchored vessel and from a beam preliminarily mounted on the berth of the
“Akademik Vernadskii” station. The measurements of the characteristics of the surface and bottom currents
were carried out at depths of at most
with time steps of
min. The time of observation over the currents
h. The longest realizations
were obtained for the region of the station and
the Meek Channel, respectively. On April 1, to the north of the Argentine Islands, with the help of a precision
STP optical hydrochemical probe, we made a section with eight soundings of water from the surface of the
ocean to the maximum depth of
and studied the stratification of the thermohaline field, the field of the
light attenuation coefficient for the blue and red bands of the spectrum (E
oxygen concentration field dissolved in water (Fig.
The parameters of the environment were measured with the following accuracy:
for the direction of
for the current velocity,
the attenuation coefficient of light, and
for the concentration of oxygen dissolved in water.
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol. Translated from Morskoi Gidrofizicheskii Zhurnal,
56–63, September–October, 2002. Original article submitted September 5, 2000; revision submitted February 26, 2001.
0928-5105/02/1205–0291 $27.00 © 2002 Plenum Publishing Corporation 291