IndARC multisensor mooring

  • India’s first multi-sensor mooring was deployed on 23 July 2014 at 78o 56' N and 12o E in the inner Kongsfjorden where the depth is ~180 m.
  • The mooring consists of several sensors located at various depths as shown below 

Depth

Sensors

15m

 

25m

30m

50m

75m

100m

120m

Conductivity-Temperature-Depth (CTD), Flourometer, Dissolved Oxygen (DO), Nutrient, Photosynthetically Active Radiation (PAR)   

Single point current meter

CTD, Flourometer, DO, Nutrient, PAR

CTD

CTD

CTD, upward looking 300KHz ADCP

CTD

  • Location (left), design (middle) and deployment (right) of IndARC-I multi-sensor mooring

 

 

  • A team of Indian scientists from NCAOR and NIOT retrieved IndARC-I on 15 July 2015 and collected the data of last one year (July 2014- May 2015).

 

  • Pictures of mooring retrieval on 15 July 2015 are shown below.

 

  • Temperature (oC) and salinity (psu) profile at the Kongsfjorden using CT sensors from IndARC-I during 24 July 2014 to 15 July 2015.

 

  • IndARC-II was redeployed for another one year at the same location at Kongsfjorden on 19 July 2015 with a couple of newly added sensors (as shown below) to measure fluorescence, photosynthetically active radiation, nitrate and ambient noise. The sensors and their respective depths are as given below:

Sensor

Depth (m)

SBE 37 ODO-IMP

23

PAR – FLNTUS

24

Ambient Noise Measurement System & Transducer

30

SBE 37 ODO-IMP

33

PAR – FLNTUS

35

SATLANTIC - SUNA

37

Nortek Aquadopp

38

SBE 37 CTD IMP

55

SBE 37 CTD IMP

80

SBE 37 CTD IMP

105

SBE 37 CTD IMP

145

SBE 37 CTD IMP

165

ADCP-300 KHz

175