Digital Signal Processing Reference
In-Depth Information
5.6.3.
Field work and Data Collection
Primary Data Sets
The primary data sets are considered the crucial and complementing component to the secondary
datasets. This data was possible to be collected through on-site field work because it was not available
in databases or archives like other types of secondary sets. Also some measurements are study specific
and need to be collected during field work. This field work is considered an essential and important
tool in this research. The physically based models developed in this study are based on field
measurements and investigations of different parameters used for modelling, for both the
hydrodynamics and water quality. Four field work surveys were conducted at different times during
the period of research. Each specific field mission has its own objectives and type of data needed for
conducting the work. The details of files work is given in given below.
Field Work (1)
This field work mission was conducted in
May 2005
, as a primary and main investigation of the
catchment and lake area and for collecting basic needed data to develop the modelling tools. A
strategy for field work and data collection was planned. The following section summarises the field
work plan;
Required Data Collection
Data collection and fieldwork in the study area is divided into two parts; the catchment fieldwork and
the lake field work.
Figure (5-15)
shows the sampling sites location within lake.
Catchment field work
The fieldwork in the catchment will include data collection along the main drain Edko and at the
points of pumping stations within the study catchment The required data include:
o
Locations of main pumping stations and bridges along main drain Edko (X,Y coordinates,
using GPS in UTM format)
Water quality samples at the locations of pumping stations and bridges along the main drain
Edko
o
Lake Edko field work
For the lake survey the following data is required:
o
A number of
five points are selected along the lake area
. Total station survey for the lake
area was conducted using these points to identify levels, and was used as reference points for
other measurements in the lake
Taking measurements inside the lake using GPS eco-sounder to identify water depth at
different possible locations that were accessible.
o
Taking water samples for water quality analysis of different parameters and specifically
physicochemical, biological and CHL-aorophyll a
o
Taking water quality samples inside exit channel of the lake to the sea
o
At the same locations of water sampling, a number of sediment samples were collected.
o
Detailed identification of the vegetation types inside the lake through photos and sampling of
vegetation.
o
Measuring water discharge from Edko drain, through measuring water velocity cross sections
at a fixed location along drain outlet via current meter and at the exit point of the lake to the
sea channel.
o
Equipment
The equipment used to conduct the fieldwork is the hydrographic survey equipment (Total station,
GPS, Eco-sounder, Current meter and bottom sediment sampler) and the water quality sampling
Search WWH ::
Custom Search