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1. INTRODUCTION
The AES Marine Mammal Observer database was developed to address some of the uncertainty associated with how
Marine Mammal Observers (MMOs) collect data, to satisfy the full range of
statutory and policy requirements placed on seismic operators. AES still
provides onshore and in situ training for its MMOs but the database
provides a vehicle for collecting,
viewing and quality checking marine mammal data minute by minute. Standard
outputs also enable a land-based project manager to rapidly view and quality
check outputs on a weekly basis, to ensure MMO staff and contractors are acting
in accordance with the project's environmental management plan. Potentially
costly problems can then be identified and resolved quickly. Finally, the
database forms an integral part of the post-project auditing process.
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The MMO database integrates with a GPS receiver data
providing real time data entry for marine mammal sightings made during
seismic operation, as well as records of seismic operational activity.
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A full range of data is collected, including:
- job information;
- periodic observer activity (number of observers, start and end times
etc.);
- operational activity (status of the airguns); and
- environment and visibility data (hourly).
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LOGGING
SIGHTINGS
Sightings are recorded as they happen. The
location of the whale / pod is illustrated on the chart, relative to the
position of the airguns, based on readings taken using binoculars with
internal graticles, video-ranging or a simple 'estimate by eye', in the
case of close encounters. As each resighting is done, the position is
replotted so the observer can readily tell if the animal is moving towards
or away from the shutdown area.
When a shutdown is needed, this is logged
by the observer and depending on whether the animals continue to be
seen within the shutdown distance, additional
buttons tell the observer how long they have until firing can
resume.
If necessary, more than one sighting at a time can be entered and all
information is completely editable, so data entry problems can be fixed at
the time. |
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REPORTS
A number of basic reports can be
presented, including:
- An excel spreadsheet in the standard
DEH sighting data format;
- Individual cetacean observation forms
in the DEH sighting data format;
- The daily order of activities (e.g. pre
shoot searches, soft starts, full power etc.) date and time-stamped;
and
- the duration of soft starts.
Swim paths relative to the vessel can be presented in a final report
along with a detailed account of actions taken and their times and
locations. |
All information is held in a Microsoft Access relational database and can be
readily queried to provide any output to suit any audit requirement.

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Outputs include the percentage of time spent in different activities,
which can be used to measure the performance of the project against
predictions about the amount of noise put into the environment.

It can also demonstrate the amount of time spent observing. In the
following example, independent MMOs and crew shared the time 50:50. The
amount of time MMOs observe is expected to be equivalent to the amount of
daylight, in this case 12 hours per day.
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