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Modified over 4 years ago
New (and old) oceanographic tools 2012 Workshop DHP 2012 Tina Miller-Way
Properties of water of interest Parameters, units, significance –Temperature –Salinity –Dissolved oxygen –Turbidity –Light levels –Depth…
Tools to measure these properties - depth Sounding lines –Problems… Pressure sensor Sonar
Tools to measure these properties - temperature Thermometer - Hg-based how to do at depth? - reversing
Tools to measure these properties - salinity Direct or indirect measurement Refractometer Conductivity sensor
Tools to measure these properties - turbidity Secchi disk transmissometer
Tools to measure these properties - dissolved oxygen Methods - chemical, electrical, optical Optode Polarigraphic electrode Winkler
Dissolved oxygen Concentration vs saturation Saturation - –expected amount given temp, pressure, salinity (ideal gas law) = 100% saturation –Under, over or at saturation –Units = % Concetration - units = mg/l (or ppm, mmol)
Dissolved oxygen nomographs Use nomographs to determine expected DO levels (100% saturation)
Dissolved oxygen nomographs use to determine saturation level
Example O 2 data
Tools to measure these properties - light What wavelengths? –Photosynthetically active radiation (PAR) sensor How to account for changes in incident light? –Deck sensor
Other parameters Chlorophyll levels - fluorometer
But these properties vary with depth Typical open ocean profiles Called - a hydrocast
Monitoring units Hydrolab/YSI = brands
Combined units moored, deployed, mobile CTD Argo floats
CTD hydrocast See our CTD hydrocast
Other oceanographic tools Water samplers –Nansen / Niskin bottle –messengers
Developing Metadata Standards for GLEON Barbara Benson.
Data management system of R/V Muikku Markku Viljanen University of Joensuu.
Event, March th 2013 Pressure. Event, March th 2013 Temperature.
Aquatic Productivity and Dissolved O2 lab
GEF2610 Physical Oceanography Course content The physical structure and circulations of the oceans, and the physical processes influencing them. Learning.
SIO 210: I. Observational methods and II. Data analysis (combined single lecture) Fall 2013 Remote sensing In situ T, S and tracers Velocity Observing.
PHYSICAL PROPERTIES OF SEAWATER. How Unique is Water? Water is one of only 3 naturally occurring liquids (mercury and ammonia) Only substance occurring.
Bio-optical Gliders and Profiling floats in the Mediterranean ARGO SCIENCE WORKSHOP – MARCH 13 – 18, 2006 Fabrizio D’Ortenzio 1, Katarzyna Niewiadomska.
Sampling in the Marine Environment. Ready to depart for an exciting day on the high seas. Coastal waters research vessel. Note boom and winch used to.
Dissolved oxygen and aquatic primary productivity.
Chemistry Tools CTD (conductivity temperature depth) Thermometers Bucket Reversing Bathythermograph pH pH meter Chemical test.
The Chemical and Physical Environment. Light photons- packets of electomagnetic energy wavelength: ultraviolet= short; infrared= long ~ 53% of the incident.
Boat field trip on the Columbia Point May 6, 2008 Boston Harbor sampling stations: 1. Neponset River – mouth 2. Thompson Island 3. Deer Island Anchorage.
Water and Seawater Chapter 3. Water Molecules Water has three states ICE GAS WATER.
Lecture goal: To identify and describe the properties of water that are most important to understanding broader patterns of habitat structure and ecology.
Wetlands 101 Freshwater Marsh Cara & Tara. Wetlands Wetlands are areas of land that are sometimes underwater or the soil contains a great deal of moisture.
IOOS Application to Harmful Algal Blooms and Ecosystem Health Monitoring Josh Kohut Rutgers University, Institute of Marine & Coastal Science Bob Connell.
Parameters and instruments A. Proshutinsky, Woods Hole Oceanographic Institution Science and Education Opportunities for an Arctic Cabled Seafloor Observatory.
PH and Salts Colligative Properties of Seawater vs. Freshwater Determining Salinity, Temperature, and Depth.
Problem Description: To develop an autonomous network for monitoring aquatic environment Problem Description: To develop an autonomous network for monitoring.
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