13.1 Introduction
The Black Sea shelf region is important to our regional ecosystem due the fact that
here many of the waters coming from all surrounding countries contribute the
composition. A special place in this topic is the Danube as a European River it
comes from as far as Germany and can collect in its path many effluents from
several installations. This report presents our efforts to perform radionuclide evaluation for both water and sediment samples. As we can expect, to this inventory can
contribute the Cernavoda Nuclear Power Plant but we can also point out the effects
for the Chernobyl event that releases a large amount of radionuclides within the
atmosphere. While previous studies for the Black Sea sector analyze the whole
basin, this work focuses on the Romanian sector 30 years after Chernobyl incident
(Bologa and Patrascu 1996).
Within this report we employed only high resolution gamma spectrometry for
our samples and the report is following the natural radionuclide series and
137 Cs as a
marker for human activity.
Samples were taken from the locations presented in Fig. 13.1 under the approximate same timing and conditions ensuring that their population is consistent with
each other.
Also, a radionuclide occurring mainly through nuclear activities, the
241 Am
shows a great potential for being used as a tracer for a better assessment of the
Chernobyl nuclear incident.
13.2 Material and Methods
Water and sediment samples were collected on-board R/V “Steaua de Mare I”
(National Institute for Marine Research and Development „Grigore Antipa” –
NIMRD) during 30 March–04 April 2016 on standard monitoring oceanographic
stations. Seawater at 2 m above the maximum depth of each station was collected
using bathometers and Van Veen grab for sediments samples. The sea currents were
measured using the ADCP (Acoustic Doppler Current Profiler) during winter 2010
(February) by the NIMRD. The primary production concentration images and data
are retrieved on-line from the dvs.net.ru (Remote Sensing Department Federal State
Budget Scientific Institution “Marine Hydrophysical Institute of RAS”) for the
period of the in-situ water and samples data (images are cropped for the analyzed
period).
The method used for sediments samples was adapted on-board taking into
consideration the weather and sampling conditions. The sediments samples were
collected from the middle of the samples grab using a specialized palette (Figs. 13.2
and 13.3).
All samples are taken from the shoreline (considered 0 m water depth) to
off-shore waters (maximum depth of 100 m) and are subject to shoreline specific
222
G. Chiros ¸ca et al.
The Black Sea shelf region is important to our regional ecosystem due the fact that
here many of the waters coming from all surrounding countries contribute the
composition. A special place in this topic is the Danube as a European River it
comes from as far as Germany and can collect in its path many effluents from
several installations. This report presents our efforts to perform radionuclide evaluation for both water and sediment samples. As we can expect, to this inventory can
contribute the Cernavoda Nuclear Power Plant but we can also point out the effects
for the Chernobyl event that releases a large amount of radionuclides within the
atmosphere. While previous studies for the Black Sea sector analyze the whole
basin, this work focuses on the Romanian sector 30 years after Chernobyl incident
(Bologa and Patrascu 1996).
Within this report we employed only high resolution gamma spectrometry for
our samples and the report is following the natural radionuclide series and
137 Cs as a
marker for human activity.
Samples were taken from the locations presented in Fig. 13.1 under the approximate same timing and conditions ensuring that their population is consistent with
each other.
Also, a radionuclide occurring mainly through nuclear activities, the
241 Am
shows a great potential for being used as a tracer for a better assessment of the
Chernobyl nuclear incident.
13.2 Material and Methods
Water and sediment samples were collected on-board R/V “Steaua de Mare I”
(National Institute for Marine Research and Development „Grigore Antipa” –
NIMRD) during 30 March–04 April 2016 on standard monitoring oceanographic
stations. Seawater at 2 m above the maximum depth of each station was collected
using bathometers and Van Veen grab for sediments samples. The sea currents were
measured using the ADCP (Acoustic Doppler Current Profiler) during winter 2010
(February) by the NIMRD. The primary production concentration images and data
are retrieved on-line from the dvs.net.ru (Remote Sensing Department Federal State
Budget Scientific Institution “Marine Hydrophysical Institute of RAS”) for the
period of the in-situ water and samples data (images are cropped for the analyzed
period).
The method used for sediments samples was adapted on-board taking into
consideration the weather and sampling conditions. The sediments samples were
collected from the middle of the samples grab using a specialized palette (Figs. 13.2
and 13.3).
All samples are taken from the shoreline (considered 0 m water depth) to
off-shore waters (maximum depth of 100 m) and are subject to shoreline specific
222
G. Chiros ¸ca et al.