DELOS B

DELOS B - Deep-ocean Environmental Long-term Observatory System

The DELOS (Deep-ocean Environmental Long-term Observatory System) system comprises two environmental monitoring platforms: DELOS A located in the near field (within 50 m of a sea floor well); and DELOS B located in the far field (~16 km from sea floor infrastructure).

DELOS B located on flat (<1° slope), finely sedimented sea floor within petroleum lease Block 18 in a mid- slope area off Angola, between the deep-sea fans of the Congo and Kwanza rivers.  The platform hosts a camera module, oceanographic module and acoustic module, each with multiple instruments, plus a sediment trap module.

http://www.fixo3.eu/wp-content/uploads/2014/01/DELOS2.jpg

Infrastructure Location

Study Area

Location SE Atlantic off the coast of Angola
Distance from Land 90 km
Max Depth 1400 m
Oceanographic features of area DELOS is situted between the deep-sea sediment fans of two major rivers, the Congo and the Kwanza. The area is highly productive, with seasonal and annual variability influenced by the interactions of the Angola and Benguela current systems.
Relevant publications isi journals Bagley, P.M., Smith, K.L., Bett, B.J. et al. 2015. The DELOS Project; Long-term Observatories in an Oil Field Environment in the Tropical Atlantic Ocean. In Seafloor Observatories: A New Vision of the Earth from the Abyss, ed. P. Favali, A. Santis and L. Beranzoli, Chap. 11. Berlin: Springer-Praxis.

Vardaro, Michael F., Philip M. Bagley, David M. Bailey, Brian J. Bett, Daniel OB Jones, Rosanna J. Milligan, Imants G. Priede et al. 2013. "A Southeast Atlantic deep-ocean observatory: first experiences and results." Limnol. Oceanogr. Methods 11: 304-315.

Bagley, P.M., Smith, K.L., Bett, B.J. et al. 2007. Deep-ocean Environmental Long-term Observatory System (DELOS): Long-term (25 year) monitoring of the deep-ocean animal community in the vicinity of offshore hydrocarbon operations. In Oceans '07 (ISBN: 978-1-4244-0635-7), 1–5 Aberdeen: IEEE.

Relevant publications proceedings published in the context of conference O’Brien, R., Walls, A., Clarke, J., Costa, S.P., Oliviera, S., Smith, K., Priede, I.G., Vardaro, M., Rowe, G., Bailey, D., Milligan, R., Ruhl, H., Sangolay, B.B., 2014. "A Deeper Perspective: 5 Years of The Delos Project." SPE International Conference on Health, Safety, and Environment, Long Beach, California, USA, 17-19 March

Milligan, R.J., Clarke, J., Polanski, J. et al. 2013. Deep Water Environmental Long-term Observatory System: Studies of Fish Community Structure in an Angolan Deep Water Oil Field. Oral presentation given at the Deep-Sea Fish Biology meeting, University of Glasgow, UK, 8–11 July.

Milligan, R.J., Clarke, J., Polanski, J. et al. 2012. The effects of oil production on deep-water fish communities in West Africa: Early results from the DELOS project. Oral presentation given at the 13th International Deep-Sea Biology Symposium, Wellington, New Zealand, 3–7 December.

Walls, A., Clarke, J., Bagley, P., et al. 2010. Deepwater Environmental Long-term Observatory System (DELOS). Paper SPE 126642 presented at the SPE International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production, Rio de Janeiro, Brazil, 12–14 April. http://dx.doi.org/10.2118/126642-MS.

Bagley P.M., Smith K.L., Bett B.J. et al. 2006. Deep ocean Environmental Long term Observatory System (DELOS): Long term monitoring of the deep ocean demersal community in the vicinity of offshore hydrocarbon operations. Poster presented at the 11th International Deep-Sea Biology Symposium, Southampton, UK, 9–14 July.

Scientific Researchers

Name Email
Dr. Michael Vardaro <Please login to view>
Dr. David Bailey <Please login to view>
Bomba Bazika Sangolay <Please login to view>
Dr. Brian Bett <Please login to view>
Dr. Gilbert Rowe <Please login to view>
Dr. Ken Smith <Please login to view>
Dr. Henry Ruhl <Please login to view>

Technicians

Name Email
Dr Stewart Chalmers <Please login to view>
John Polanski <Please login to view>

Status / Maintenance

System Status Operational Planned Frequency 12 month(s)
Platform Required Deep Sea Research Vessel People Involved 2
Duration of Operations 14 day(s) Cleaning Yes
Replacments Yes Download Data Yes

Data Information

Final data output format Others Data Quality Check Yes
Type of quality check on real-time/near-real time data Other Real Time – Data availability target -
Type of Quality check on delayed mode data Manual Delayed Mode – Data availability target 12 months
Own data management Yes Type of use of data Research Private use
Data Management Link
GEOSS URN urn:geoss:csr:resource:urn:uuid:eda1d6de-d33a-754a-424d-33696720583a
GEOSS Link http://geossregistries.info/geosspub/resource_details_ns.jsp?compId=urn:geoss:csr:resource:urn:uuid:eda1d6de-d33a-754a-424d-33696720583a

TNA

Avaliable for TNA No
Prefered time period for TNA
TNA Support offered
Services Available
Potential Additional Uses
Data Ports -
Availability of External Power
Instrument installation methodology

 

 

Data History
Instrument installation methodology -
Observatory maintenance estimated or planned schedules
Data policy and access
Additional comments
Modality of access In-Person

Sensors

Deployed 01/02/2009 Planned
Instrument/Sensor Type Sediment trap Parameter(s) Particle Flux
Platform Mooring Manufacturer McLane
Instrument/Sensor documentation (URL)
Sensor Type / Model PARFLUX Mark 78H-21 Power Supply Battery module
Approximate Depth / Height 1300 Sampling interval
Calibration Samples Available Yes Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Active acoustic Parameter(s)
Platform Seaflo Manufacturer Kongsberg
Instrument/Sensor documentation (URL)
Sensor Type / Model High Resolution mechanically scanned sonar head Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Passive acoustic Parameter(s)
Platform Seaflo Manufacturer Sensor Technology
Instrument/Sensor documentation (URL) http://www.sensortech.ca/userfiles/files/SQ42 Broadband.pdf
Sensor Type / Model SQ42 Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Oxygen Sensor Parameter(s) DOXY
Platform Seaflo Manufacturer Aanderaa
Instrument/Sensor documentation (URL) https://www.bodc.ac.uk/data/documents/nodb/pdf/aad i_oxygen_optode_3830_3930_3975.pdf
Sensor Type / Model 3975 Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Conductivity Sensor Parameter(s) COND
Platform Seaflo Manufacturer Aanderaa
Instrument/Sensor documentation (URL) http://www.aanderaa.com/media/pdfs/Conductivity-Se nsor-3919.pdf
Sensor Type / Model 3919 Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Pressure sensor Parameter(s) PRES
Platform Seaflo Manufacturer Aanderaa
Instrument/Sensor documentation (URL) http://www.aanderaa.com/media/pdfs/Pressure-Sensor -4017.pdf
Sensor Type / Model 4017E Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Current meter Parameter(s) Currents
Platform Seaflo Manufacturer Aanderaa
Instrument/Sensor documentation (URL)
Sensor Type / Model 3820R Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Combination fluorometer and turbidity sensor Parameter(s) TURB
Platform Seaflo Manufacturer WET labs
Instrument/Sensor documentation (URL) http://www.wetlabs.com/eco-flntu
Sensor Type / Model ECO FLNTU Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Transmissometer Parameter(s) TURB
Platform Seaflo Manufacturer WET labs
Instrument/Sensor documentation (URL) http://www.wetlabs.com/cstar
Sensor Type / Model C star Transmissometer Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type ADCP Parameter(s) Currents
Platform Seaflo Manufacturer Teledyne
Instrument/Sensor documentation (URL)
Sensor Type / Model RDI 300kHz ADCP Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Digital stills camera Parameter(s) Images
Platform Seaflo Manufacturer Kongsberg
Instrument/Sensor documentation (URL) http://www.km.kongsberg.com/ks/web/nokbg0397.nsf/A llWeb/6885E2EBD904E3F4C12574EF003DD65C/$file/oe142 08_Datasheet_A4.pdf?OpenElement
Sensor Type / Model oe14-208 Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments

Deployed 01/02/2009 Planned
Instrument/Sensor Type Digital stills camera Parameter(s) Images
Platform Seaflo Manufacturer Kongsberg
Instrument/Sensor documentation (URL) http://www.km.kongsberg.com/ks/web/nokbg0397.nsf/A llWeb/6885E2EBD904E3F4C12574EF003DD65C/$file/oe142 08_Datasheet_A4.pdf?OpenElement
Sensor Type / Model oe14-208 Power Supply Battery module
Approximate Depth / Height 1400 Sampling interval
Calibration Samples Available No Frequency of Calibration Samples
Intercalibration Available No Intercalibration Platform
Intercalibration Frequency
Problems
Solution Adopted
Datasheet URL
Comments