Recent content by geojon
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How Do Isotope Tracers Determine Mixing Ratios in Water Samples?
@Greg Bernhardt I've used the Isotopic Mixing Equation: δ18OTQT = δ18O1Q1+δ18O2Q2 in order to solve it. It can also be solved using a Two-component Mixing Model, according to the equations: F2 = (δ18Omix-δ18O1) / (δ18O2-δ18O1) ; F1 = 1 - F2 Using both equations, you find that the fraction of...- geojon
- Post #3
- Forum: Biology and Chemistry Homework Help
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How Do Isotope Tracers Determine Mixing Ratios in Water Samples?
Homework Statement Two water samples are mixed. Sample 1 has δ18O-H2O = -1(per mil), Sample 2 has δ18O-H2O = -20 (per mil), and the mixture has δ18O-H2O = -15 (per mil). What fraction of water came from sample 1 and what fraction came from sample 2? Assume that F = the fraction of the water...- geojon
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- Isotope Mixing
- Replies: 1
- Forum: Biology and Chemistry Homework Help
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Graduate Calculation of alpha particles from 226-Ra decay
I am trying to solve the following problem for my graduate course in isotope geochemistry. If 1 g of 226Ra is separated from its decay products and then placed in a vessel, how much helium (cm3) will accumulate in the vessel in 60 days? Here is what I know. The decay series from 226Ra to Lead...- geojon
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- Alpha Calculation Decay Isotopes Particles
- Replies: 3
- Forum: Atomic and Condensed Matter
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Is This a Long or Short Rossby Wave at 35o N?
Homework Statement Consider a Rossby wave propagating in a homogeneous ocean with a water depth of 4,000m at 35o N latitude. If the wave length of this wave is 500km, is this a long or short Rossby wave? Homework Equations shortwaves: |kx-1| <<RD longwaves: |kx-1| >> RD kx is the x-component...- geojon
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- Coriolis Short Wave
- Replies: 1
- Forum: Advanced Physics Homework Help
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Sverdrup Dynamics Homework: Compute Transport Across 350 N
Homework Statement Compute the Sverdrup transport (in units of Sverdrups) across 350 N in an ocean that is 6,500 km wide at that latitude, if the curl of the wind stress is -10-7 Pa/m. Wht is the direction of this transport? Homework Equations My = (1/β) * curlHt*w. Where, t is Tau (wind...- geojon
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- Coriolis Dynamics
- Replies: 1
- Forum: Advanced Physics Homework Help
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Calculating Geostrophic Flow and Pressure Gradient | Station J and K Example
Homework Statement Station J is 100 km West of station K at 30o N. The sea level difference between the two stations is +0.10m. What is the geostrophic flow between J and K, and what is it's direction? Specify and justify any assumptions you make. Homework Equations What is the pressure...- geojon
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- Currents
- Replies: 1
- Forum: Advanced Physics Homework Help
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Heat Flux Calculation: August to February
I got the CP value from my lecture notes. My confusion with units is that the calculation leaves me with C -kg-m2- geojon
- Post #13
- Forum: Introductory Physics Homework Help
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Heat Flux Calculation: August to February
delQ = delT / [(density of seawater) * (height of water column)] = 17C / [(1,030 kg/m3 * 10 meters)] = 0.00165 (units here are difficult to figure out). Q = delT * CP / 6 months = 17C * 1.01 J/gC = 17.17 J/g in 6 months. These (above) are not bulk equations, but was given to me by a...- geojon
- Post #11
- Forum: Introductory Physics Homework Help
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Heat Flux Calculation: August to February
I have been working from the bulk equations. They exist for Q, Qs and QL. delQ = delT / [(density of seawater) * (height of water column)] = 17C / [(1,030 kg/m3 * 10 meters)] = 0.00165 (units here are difficult to figure out). Q = delT * CP / 6 months = 17C * 1.01 J/gC = 17.17 J/g in 6...- geojon
- Post #10
- Forum: Introductory Physics Homework Help
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Heat Flux Calculation: August to February
Q = Qs - Qb - Qh - Qe = zero is to say that solar radiation (Qs) which is a flux into the ocean is equal to infrared longwave radiation + sensible heat + latent heat (Qb + Qh + Qe) which are fluxes out of the ocean. There are also bulk equations for Qh and Qe, however certain components of...- geojon
- Post #7
- Forum: Introductory Physics Homework Help
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Heat Flux Calculation: August to February
Assessing the conductive (sensible heat) loss, without direct measurement of parameters like the temperature of air 10 meters above the sea surface, is impossible. I do have some lecture notes that I can look through to see if there is a value somewhere for this, though. Yes, your suspicion...- geojon
- Post #5
- Forum: Introductory Physics Homework Help
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Volume Fluxes and Associated Velocities
Homework Statement Suppose that the volume transport associated with the wind-driven circulation's western boundary current (such as the Gulf Stream) is 50 x 10^6 m^3/second. Assume that this volume transport is carried in a current of uniform speed which is 50 km wide and 1 km thick...- geojon
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- Physical oceanography Volume
- Replies: 2
- Forum: Advanced Physics Homework Help
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Undergrad Help: Volume Fluxes and Associated Velocities
Rearranging the equation Q = v*A to solve for velocity yields the following equation: v = Q/A Plugging in the numbers we get: v = (50 x 10^6 m^3 s^-1) / (50,000,000 m^2) ...I have converted km to meters at this point The answer then, is 1 meter/second. I am not sure of this answer, as... -
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Heat Flux Calculation: August to February
I have attached a document with my work so far. And here are the variables I am using in my work. Q = total heat flux = zero Qs = shortwave solar radiation (150 W m^-2) Qb = net longwave infrared radiation (50 W m^-e) and is derived from Qb,out - Qb,in Qh = sensible heat flux (10 W m^-2) Qe =...- geojon
- Post #3
- Forum: Introductory Physics Homework Help
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Undergrad Help: Volume Fluxes and Associated Velocities
Thank you for your help. I will try moving forward with this equation.