Study of the circulation and bathymetry of the surroundings of the circumpolar current

In English:

The present file contains information on the project 'Study of the circulation
and bathymetry of the surroundings of the circumpolar current', carried out on
board of the Spanish Oceanographic vessel Hesperides. During the campaign in
situ data (CTD, ADCP, thermosalinograph, gravimeter, echo sounder, XBT) were
recorded. Three CTD and XBT soundings profiles were observed across Brandsfield
sea, between the South Shetland Islands and the Antarctica peninsula, together
with continuous surface thermohaline, batimetry, ADCP and gravity records. NOAA
satellite infrared images were also recorded during the Drake Passage and
Brandsfield sea navigation. All these data are also correlated with
Topex-Poseidon and ERS-2 records.

During the campaign the ship was following a direct course between Cape of
Horns and Boyd Strait performing XBT, model T5 and T7, soundings down to 1700
m, every 0.5 degrees of latitude. In latitudes 59 degrees S and 62 degrees S,
CTD soundings were performed down to 2700 m, recording fluorometry, oxygen,
temperature and salinity. In the Brandsfield Sea,CTD soundings were performed
at the following points: 62.96 deg. S and 61.38 deg. W: 63.08 deg. S and 61.55
deg. W; 63.23 deg. S and 61.49 deg. W; 63.73 deg. S and 61.33 deg W; 63.56
deg. S and 63.37 deg. W; 63.41 deg. S and 61.45 deg. W; 63.02 deg. S and 60.14
deg. W; 63.34S deg and 59.87 deg. W; 63.16 deg. S and 59.98 deg. W; 62.84
deg. S and 60.29 deg. W. To interpolate data between the CTD soundings were
also performed XBT soundings.

Along the navigation were maintained continuously records of ADCP, surface
thermo haline, gravimeter, batimetry, atmospheric parameters (temperature,
pressure, wind direction and intensity, humidity).

PHASE 1: USHUAIA-LIVINGSTON NAVIGATION
Permanent ADCP measurements and CTD sounding (salinity, temperature,
fluorescency depth, oxygen, turbidity), thermosalinometer and XBT among the
points.

NOAA satellite images were taken, mainly in IR channels and a continuous record
of gravimeter and meteorology data was maintained.

PHASE 2: BRANSFIELD STRAIT
CTD and XBT soundings in points above related, between south of Deception
Island and Cierva Bay in the Antarctica peninsula, and from Cierva Bay towards
BAE Juan Carlos I in Livingston Island. During the profiles ADCP, atmospheric
parameters, thermosalinograph, gravimeter and batimetry was continuously
recorded. During this phase, infrared channels of NOAA satellites were
recorded.

PHASE 3: STATIONS-USHUAIA. 01MAR 2002-03 MAR 2002
During this phase, the ship was following a direct course from Boyd Strait, in
the South Shetland Islands, towards Ushuaia, between Boyd Strait, in South
Shetland Islands, and the entrance of Beagle Channel. During the navigation
were continuously recorded batimetry, gravimeter, thermosalinograph,
atmospheric parameters performing XBT soundings.

During the phase NOAA satellite infra red channels were recorded.

En Espanol:

Esta ficha contiene informacion sobre el proyecto 'Estudio de la circulacion y
batimetria en el entorno de la corriente circumpolar' ; llevado a cabo a bordo
del BIO 'Hesperides'. Durante el Proyecto se efectuaron medidas 'in situ' al
atravesar el Drake (CTD, ADCP, termosalinografo, gravimetria, sondas,)
lanzandose XBT. En el Brandsfield se efectuaron tres transectos entre las
Shetland del Sur y la Peninsula Antartica con CTD y XBT, junto con registros
continuos de termosalinometro, batimetria, ADCP y gravedad. Tanto durante los
transitos en el Drake, como en el Brandsfield se tomaron imagenes del NOAA.
Estas medidas se estan correlacionado con medidas altimetricas de los satelites
Topex-Poseidon y ERS-2.

Sobre la derrota del barco al atravesar el Paso de Drake a rumbo directo, entre
Cabo de Hornos y Estrecho de Boyd, se lanzaron XBT , hasta 1700 m con XBT
modelos T5 y T7, cada medio grado en latitud. En los puntos de latitud 59
grados S y 62 grados S se efectuaron sondeos CTD hasta 2700 m. Los sondeos CTD
registraron fluorometria, oxigeno disuelto, temperatura, salinidad. En el
Brandsfield se efectuaron sondeos CTD en los puntos 62.96 grados S y 61.38
grados W: 63.08 grados S y 61.55 grados W; 63.23 grados S y 61.49 grados W;
63.73 grados S y 61.33 grados W; 63.56 grados S y 63.37 grados W; 63.41 grados
S y 61.45 grados W; 63.02 grados S y 60.14 grados W; 63.34 grados S y 59.87
grados W; 63.16 grados S y 59.98 grados W; 62.84 grados S y 60.29 grados W.
Entre las sondas CTD se lanzaron XBT para interpolar.

Durante la navegacion se mantuvieron continuamente operativos el ADCP,
gravimetro, sondador, estacion meteorologica (temperatura, presion, direccion e
intensidad del viento, humedad) y termosalinometro.

FASE 1: NAVEGACION USHUAIA-LIVINGSTON
Se han medido en continuo las corrientes ADCP y sondeos CTD en (salinidad,
temperatura, fluorescencia, profundidad, oxigeno, fluorescencia)
termosalinometro y XBT entre los puntos.

Durante la navegacion se han registrado imagenes NOAA, en especial en el canal
termico y mantenido el registro permanente de gravimetria, profundidad y datos
meteorologicos.

FASE 2: Estrecho de Brandsfield
Perfiles con CTD y XBT en los puntos antes relacionados,entre el sur de Isla
Decepcion y la Caleta Cierva, y desde Caleta Cierva en la peninsula Antartica,
hacia la BAE Juan Carlos I. Durante los perfiles se registraron continuamente
ADCP, parametros atmosfericos, termosalinometro, gravimetro y sondador. Durante
toda la fase se registraron imagenes en los canales t?rmicas de los satelites
NOAA.

FASE 3 : ESTACIONES-USHUAIA 01 MAR 2002-03 MAR 2002
Durante esta fase de retorno desde las Shetland del Sur hacia Ushuaia, a rumbo
directo entre el estrecho de Boyd en las Islas Shetland del Sur, y la entrada
del Canal de Beagle Se registraron continuamente la batimetria, gravimetria,
termosalinografo y parametros atmosfericos, lanzandose XBT. Durante la fase se
continuaron registrando las imagenes de los canales termicos de los satelites
NOAA.