![]() Zero refers to sea level, and then depth is in meters below that, and this one going down to 4,000 meters. So let me just start here, and I showed you this last time. And I wanted to pursue that just a little bit further, and then get into some quantitative methods for estimating how the atmosphere forces various things that go on in the ocean. Some places are deeper, some places are shallower, but there is that reference level from which we work.Īny questions on that? Then we moved into a discussion of how to measure salinity and temperature in the oceans, and I talked about some of the methods to do that. It’s an oversimplification to say, of course, that the ocean basins have flat bottoms like a bathtub or something.īut there is a little bit of a tendency that way because they do have-they do have ocean crust beneath them which floats at a certain level and gives you the depth of about 5 kilometers in many, many places around the world ocean. And that’s why there are these vast areas of the ocean that are at about the same depth below sea level, these abyssal planes. ![]() The continental crust which sits a bit higher, and the ocean crust which sits a bit lower. We connected that to plate tectonics, both to make the point that those ocean basins are changing through geologic time, but also to get at this curious issue of how the oceans are not just kind of a random roughness on the Earth, but they really represent two basic levels of Earth crust. And last time I gave an overview of the nature of the ocean basins, basically the geometry of the basins in which the water sits. Professor Ron Smith: So now we are into this new section of the course, oceanography. ĭensity of crude oil, Density of fuel oils, Density of lubricating oil and Density of jet fuel as function of temperature.Īs shown in the figures, the change in density is not linear with temperature - this means that the volumetric expansion coefficient for water is not constant over the temperature range.The Atmosphere, the Ocean, and Environmental Change GG 140 - Lecture 20 - Ocean Water Density and Atmospheric ForcingĬhapter 1: Ocean Depth Profiles įor other substances, see density and specific weight of acetone, air, ammonia, argon, benzene, butane, carbon dioxide, carbon monoxide, ethane, ethanol, ethylene, helium, hydrogen, methane, methanol, nitrogen, oxygen, pentane, propane and toluene. See also other properties of Water at varying temperature and pressure : Boiling points at high pressure, Boiling points at vacuum pressure, Dynamic and kinematic viscosity, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pK w, of normal and heavy water, Melting points at high pressure, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific heat (heat capacity), Specific volume, Thermal conductivity, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium. ![]() See Water and Heavy Water for thermodynamic properties at standard condtions. The density of water depends on temperature and pressure as shown below: Note! Temperature must be within the ranges 0-370 ☌, 32-700 ☏, 273-645 K and 492-1160 °R to get valid values. The output density is given as g/cm 3, kg/m 3, lb/ft 3, lb/gal(US liq) and sl/ft 3. The calculator below can be used to calculate the liquid water density at given temperatures. See more about the difference between mass and weight Online Water density Calculator The density of water is 1.940 sl/ft 3at 39 ☏ (4 ☌), and the specific weight in Imperial units is In the Imperial system the mass unit is the slug, and is derived from the pound-force by defining it as the mass that will accelerate at 1 foot per square second when a 1 pound-force acts upon it :ġ = 1 * 1 and 1 = 1 /1 In the SI system, specific weight of water at 4☌ will be: G = acceleration due to gravity, units typically and value on Earth usually given as 9.80665 m/s 2or 32.17405 ft/s 2 Specific weight is the ratio of the weight to the volume of a substance: Pure water has its highest density 1000 kg/m 3 or 1.940 slug/ft 3 at temperature 4☌ (=39.2☏). Density is the ratio of the mass to the volume of a substance:
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