1. the correlation of wet deposition inland and in coastal areas
Pike County, Georgia
Sapelo Island, Georgia
Julian McAdams Spring Data Analysis EAS 4803

2. introduction
Correlations between wet deposition species in Georgia, inland and on the coast.
Specific associations between Na and Cl, and NH4 and SO4…regressions.
F-test: the standard deviations of two normally distributed populations are equal.
T-distribution: Arises in the problem of estimating the mean of a normally distributed population when the sample size is small.

4. correlation of each species between sites
Correlation coefficients are in the legends. Example: coorCalcium=corrcoef(Ca1,Ca3)

5. regression lines at both sites for na and cl
Strong correlation between Na and Cl at both sites.
Na and Cl concentrations at Sapelo are larger than Pike.
Regression lines overlap.

6. regression lines at both sites for nh4 and so4
Bad correlation between NH4 and SO4.
NH4 concentrations at Sapelo are smaller than Pike.
Regression lines overlap reduced major is different.

7. F- test at both sites F-test F-Real F-Table Calcium 1 2.1683 Magnesium
F-Real
F-Table
Calcium 1
2.1683
Magnesium
Potassium
Sodium
Ammonium
Nitrate
Chloride
Sulfate
1.1342

8. T- distributions at both sites
T-Distribution Pike County
T value
T Low
T High
Norm 1
Norm 2
Calcium
2.093
0.0579
0.088
0.0101
0.1358
Magnesium
0.016
0.0278
0.0465
Potassium
0.0199
0.1207
0.2814
Sodium
0.0941
0.1686
0.2873
Ammonium
0.138
0.4303
0.8964
Nitrate
0.6253
1.0224
1.6553
Chloride
0.1804
0.2981
0.4858
Sulfate
1.0682
1.5732
0.2633
2.3781
T-Distribution Sapelo Island
T value
T Low
T High
Norm 1
Norm 2
Calcium
2.093
0.0771
0.1259
0.2038
Magnesium
0.0637
0.1047
0.1702
Potassium
0.0323
0.0524
0.0002
0.0845
Sodium
0.536
0.8731
1.4105
Ammonium
0.0864
0.1642
0.288
Nitrate
0.6603
1.0683
0.01
1.7186
Chloride
0.9884
1.589
0.0311
2.5463
Sulfate
0.8482
1.3223
0.0924
2.0781

9. conclusion Correlations are strongest with Na and Cl.
Correlations between Ca, NO3, and NH4 are “better” than the other species.
Associated trends of species on each island are observed to be similar.
Sources of wet deposition at the coast are strongly influenced by the sea spray and salt marsh interactions.