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What is Deep Seawater? Research on Deep Seawater
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Toyama Deep Sea Water Glossary
What's Special about Toyama Deep Sea Water?
Low-Temperature Stability Inorganic Nutrient Richness Purity
  While the temperature of surface seawater varies 8-30 from season to season, the deep seawater of Toyama Bay only fluctuates 2 all year round.   As photosynthesis does not occur at depths where sunlight does not penetrate, inorganic nutrients are not consumed. As a result, in comparison with surface water, deep seawater contains a high amount of inorganic nutrients including nitrogen and phosphorus, which are consumed by phytoplankton.
  The balance of minerals is also favorable.
  The amount of organic matter and bacteria in deep seawater is considerably less than in surface water. Deep seawater is extremely pure from both a chemical and microbiological standpoint.
*Data of Toyama Bay
Properties of Toyama Bay Deep seawater
Water Temp.
()
Salinity
(%)
Inorganic Nutrient (mol) General Viable Bacteria Count
(per ml)
Phosphate-Phosphorus
(PO4-P)
Nitrate-Nitrogen
(NO3-N)
Silicate-Silicon
(SiO4-Si)
Toyama Bay Deep Seawater 1-2 3.40-3.41 1.2-1.8 14-26 30-38 1-10
Toyama Bay Off-shore Surface Water 8-30 3.30-3.40 0.03-0.1 0-3 3-9 1x10¹-10³
About Results of Toyama Bay Oceanic Deep Sea Water Research

 In Toyama Prefecture , in order to protect the stability of Toyama Bay ’s deep sea water and observe minute particles in the water, every year, Aquapocket, the Namerikawa Deep Sea Water/Watershed Facility and the Nyuzen Deep Sea Water Activity Facility conducts water quality analysis.

   Results of the Toyama Prefectural Governments Water Quality ResearchJapanese Lanuage

  Namerikawa City Government and Nyuzen Town Government also has conducted water quality research.

 


TOYAMA COUNCIL OF DEEP SEA WATER
[Toyama Council of Deep Sea Water Secretariat]
Toyama Prefectural office 1-7 Shinsogawa Toyama City 930-8501
phone.076-444-3245  fax.076-444-4401
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