What we are doing for Deep-Sea and Seafloor Observatory Science

Envirtech Vulcan Class

Envirtech Vulcan Class Seafloor Laboratory

Seafloor Laboratories

First step in oceanic environment evaluation is to collect and monitor physical parameters, like sea temperature, waves heave and direction, current speed and so on. Many real-time, climatical buoy networks were implemented in the last 10 years as well as deep ocean seafloor observatories.

The ocean exerts a pervasive influence on earth's environment. It is therefore important that we learn how this system operates.

Classical methods of observing the ocean fail to fit the sampling requirements that are naturally imposed by the temporal and spatial scales of these phenomena.

 

They also fail to provide proper tools to detect the onset and monitoring of episodic events (e.g. eruptions, earthquakes and tsunami). To address the scientific issues listed above, long time-series measurements of critical biological, geological, chemical and physical parameters are needed. This calls for the deployment of networks of seabed, moored and mobile sensor suites, as well as access to equipment and facilities for scientific data processing and analysis. This can only be addressed by establishing continuous long-term observing capabilities with the capacity for bidirectional telemetry.
The maintenance of a realtime data stream from the observatory to shore, and the ability to control instruments within the observatory from shore, will have a revolutionary impact on our understanding of steady-state, periodic and transient events.
Long-term operations require in situ power sources, through e.g. diesel or fuel cell generators moored for long periods at the sea surface, deployed on the sea bottom or provided by cable from shore. There are other technological challenges, requiring the use and further development of acoustic tracking and data communication systems, fixed seabed stations with high precision and reliable scientific instrumentation, remotely operated vehicles (ROVs), and autonomous marine vehicles (AMVs) equipped with dedicated scientific sensor suites.A generation of sensors must be developed capable of sustained operations in deep sea conditions.

GENERAL INFORMATION

  Download PDF Specifications
Frame Shape 950 mm x 950 mm x 1000 mm
Construction AISI 316L Stainless steel  (Chromium-Nickel Steel)
Instrument case TITANIUM
Weight in air 110 Kg
Weight in water   90 Kg
Ballast 200 Kg
Operational Temperature -4°C +45°C (standard)
Extended Operational Temperature -20°C  +70°C (optional)
Operational maximum Depth 6,000 meters water depth
 

STANDARD FEATURES 
(tailored systems available)

 
Pressure Gauge (single) Paroscientific Quartz crystal resonator
Accuracy  0.01 % FS
Resolution 0.0001% FS
Tilt meter +/- 45° x 3 axes
Compass Micromachined Electro-Mechanical System (MEMS)
Gyro-stabilized
Azimuth accuracy: 0.5° RMS, 0.1° resolution
Inclination accuracy: 0.2° RMS, 0.1° resolution
CPU ARM Processor 16 bit
Ram 1024 Kb
Very low power consumption
Telemetry Spread Spectrum Acoustic Modem
Acoustic link 8,500 bps
Operating Frequency: 12.75 to 21.25 Khzr
Datalogger NVRAM - 32 GB
Power Autonomy Lithium Power Pack - 2 Years

Envirtech Poseidon Class

GENERAL INFORMATION

   
Frame Shape DISH: Diameter 2200 mm, High 1400 mm
Construction AISI 316L Stainless steel  (Chromium-Nickel Steel)
Instrument case TITANIUM
Weight in air 420 Kg
Weight in water 278 Kg
Ballast 300 Kg
Operational Temperature -4°C +45°C (standard)
Extended Operational Temperature -20°C  +70°C (optional)
Operational maximum Depth 6,000 meters water depth
 

STANDARD FEATURES 
(tailored systems available)

 
Pressure Gauge (doubled) Paroscientific Quartz crystal resonator
Accuracy  0.01 % FS
Resolution 0.0001% FS
Tilt meter +/- 45° x 3 axes
Compass Micromachined Electro-Mechanical System (MEMS)
Gyro-stabilized
Azimuth accuracy: 0.5° RMS, 0.1° resolution
Inclination accuracy: 0.2° RMS, 0.1° resolution
Broadband seismometer 3-axys - Low noise - embedded inclinometer
Frequency range: 0.0027 Hz to 50 Hz
Linearity >100 dB
Dynamic range >140 dB
Sensor axys orthogonal within 0.1°
24 bit digitizer
High precision and stability Real time clock
Self Levelling platform installation
Hydrophone Bandwidth up to 2 KHz
CPU ARM Processor 16 bit
Ram 1024 Kb
Very low power consumption
Telemetry Spread Spectrum Acoustic Modem
Acoustic link 8,500 bps
Operating Frequency: 12.75 to 21.25 KHz
Magneto inductive link
 
Datalogger NVRAM - 32 GB
Power Autonomy Lithium Power Pack - 2 Years
Poseidon Class - Seabed Unit
An Envirtech technician assembling a Poseidon Class Seabed Unit

LEGAL    PRIVACY

(C) 2015 Envirtech Subsea Systems S.r.l. -  info@envirtech.org

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