**Aurora mine studies from 18/09/03**

**34 days long**

**Hydrostatic Levels System configuration at November 2004**:

**S0-S1\--**30m**\--S2\--**30m**---S3\--**30m**---S4\--**30m**---S5\--**30m**---S6\--**30m**---S7**

Sensor 0 and Sensor 1 are placed on the same platform.

All other sensors are placed with 30 meters distance.

![](media/image1.png){width="6.802083333333333in"
height="7.447222222222222in"}

Fig.1. Absolute levels, temperature and pressure

![](media/image2.png){width="6.877777777777778in"
height="8.002083333333333in"}

Fig. 2 Relative levels

![](media/image3.png){width="6.922916666666667in"
height="5.9319444444444445in"}

Fig. 3 Comparison of relative levels 0-1 (black), 1-3 ,3-4

Sensor 0 and 1 are on the same positions, distance 0 meters.

Sensor 1 through 7 distances is 30 meters.

On fig.2 and fig.3 one can see that levels difference of sensors 0-1 is
about 3 mcm, and level difference between other sensors is about 20-40
mcm.

The noise level from all sources is about 3 mcm.

![](media/image4.png){width="6.879861111111111in"
height="6.815972222222222in"}

Fig.4 First Diffusion on 30 meters , \<A\>=1.41 E-06

First Diffusion on 30 meters,Sensors: 1- 2 A=3.71E-07

First Diffusion on 30 meters,Sensors: 2- 3 A=2.29E-06

First Diffusion on 30 meters,Sensors: 3- 4 A=9.79E-07

First Diffusion on 30 meters,Sensors: 4- 5 A=2.84E-07

First Diffusion on 30 meters,Sensors: 5- 6 A=2.76E-06

First Diffusion on 30 meters,Sensors: 6- 7 A=1.78E-06

![](media/image5.png){width="6.919444444444444in" height="6.9875in"}

Fig.5 First Diffusion on 60 meters, \<A\>=9.72 E-07

First Diffusion on 60 meters,Sensors: 1- 3 A=1.63E-06

First Diffusion on 60 meters,Sensors: 2- 4 A=9.33E-07

First Diffusion on 60 meters,Sensors: 3- 5 A=5.72E-07

First Diffusion on 60 meters,Sensors: 4- 6 A=1.46E-06

First Diffusion on 60 meters,Sensors: 5- 7 A=2.68E-07

![](media/image6.png){width="6.919444444444444in"
height="7.058333333333334in"}

Fig.6 First Diffusion on 90 meters , \<A\>=1.00 E-07

First Diffusion on 90 meters,Sensors: 1- 4 A=1.10E-06

First Diffusion on 90 meters,Sensors: 2- 5 A=6.50E-07

First Diffusion on 90 meters,Sensors: 3- 6 A=2.00E-06

First Diffusion on 90 meters,Sensors: 4- 7 A=2.49E-07

![](media/image7.png){width="6.919444444444444in"
height="7.310416666666667in"}

Fig.7 First Diffusion on 120 meters , \<A\>=7.66E-07

First Diffusion on 120 meters,Sensors: 1- 5 A=8.29E-07

First Diffusion on 120 meters,Sensors: 2- 6 A=8.64E-07

First Diffusion on 120 meters,Sensors: 3- 7 A=6.04E-07

![](media/image8.png){width="6.922916666666667in"
height="6.7347222222222225in"}

Fig.8 First Diffusion on 150 meters \<A\>= 8.61E-07

First Diffusion on 150 meters,Sensors: 1- 6 A=1.04E-06

First Diffusion on 150 meters,Sensors: 2- 7 A=5.90E-07

![](media/image9.png){width="6.922916666666667in"
height="5.9319444444444445in"}

Fig.9 First Diffusion on 180 meters

First Diffusion on 180 meters,Sensors: 1- 7 A=8.09E-07

**Mean A for first diffusion on diapason 30-60-90-120-150-180 meters: A=
1.05E-06**

![](media/image10.png){width="6.919444444444444in"
height="8.872916666666667in"}

![](media/image11.png){width="6.922916666666667in"
height="7.252083333333333in"}

Fig.10 Second Diffusion 60 m \<A\>=1.98E-06

Second Diffusion on 60 meters,Sensors: 1- 2- 3 A=1.03E-06

Second Diffusion on 60 meters,Sensors: 2- 3- 4 A=2.33E-06

Second Diffusion on 60 meters,Sensors: 3- 4- 5 A=6.92E-07

Second Diffusion on 60 meters,Sensors: 4- 5- 6 A=1.59E-06

Second Diffusion on 60 meters,Sensors: 5- 6- 7 A=4.28E-06

![](media/image12.png){width="6.919444444444444in"
height="7.249305555555556in"}

Fig 11. Second Diffusion 120 meters \<A\>=1.05E-06

Second Diffusion on 120 meters,Sensors: 1- 3- 5 A=1.37E-06

Second Diffusion on 120 meters,Sensors: 2- 4- 6 A=1.53E-06

Second Diffusion on 120 meters,Sensors: 3- 5- 7 A=2.36E-07

![](media/image13.png){width="6.922916666666667in"
height="4.122222222222222in"}

Fig.12 Second Diffusion 180 m

Second Diffusion on 180 meters,Sensors: 1- 4- 7 A=5.44E-07

Second Diffusion 60 m \<A\>=1.98-06

Second Diffusion 120 m \<A\>=1.05E-06

Second Diffusion 180m A =5.44E-07

**Mean A for second diffusion on diapason 60-120-180 meters:**

**\<A\>= 1.51E-06**

**Mean A for first diffusion on diapason 30-60-90-120-150-180 meters:
\<A\>= 8.25E-07**

![](media/image14.png){width="6.303472222222222in"
height="3.0520833333333335in"}

B(dL) distribution picture

![](media/image15.png){width="4.301388888888889in" height="2.54375in"}

A from sensor number distribution

**Aurora mine studies from 14/03/04**

**72 days long**

![](media/image16.png){width="7.052777777777778in"
height="7.592361111111111in"}

Fig 12. Relative level, pressure, temperature

![](media/image17.png){width="7.052083333333333in"
height="8.002083333333333in"}

Fig.13 -- Absolute levels

![](media/image18.png){width="7.052083333333333in"
height="5.9319444444444445in"}

Fig.14 -- Relative levels 0-1(black) ,2-3,3-4

Sensor 0 and 1 are on the same positions, distance 0 meters.

Sensor 1 through 7 distances is 30 meters.

On fig.3 one can see that levels difference of sensors 0-1 is about 9
mcm, and level difference between other sensors is about 300 mcm.

The noise level from all sources is about 9 mcm.

The difference between 2003 and 2004 year is caused by unknown reason.

![](media/image19.png){width="6.919444444444444in"
height="6.745138888888889in"}

Fig.14 First diffusion on 30 m \<A\>=11.48E-5

First Diffusion (1-2)
A=5.28E-07(+1.18E-06-8.53E-08)(mcm\^2/sec/m),L(m)=30.0

First Diffusion (2-3)
A=8.10E-05(+1.97E-04-8.61E-06)(mcm\^2/sec/m),L(m)=30.0

First Diffusion (3-4)
A=6.66E-05(+2.01E-04-8.54E-06)(mcm\^2/sec/m),L(m)=30.0

First Diffusion (4-5)
A=2.15E-07(+1.31E-06-4.51E-08)(mcm\^2/sec/m),L(m)=30.0

First Diffusion (5-6)
A=4.70E-07(+1.08E-06-3.54E-08)(mcm\^2/sec/m),L(m)=30.0

First Diffusion (6-7)
A=5.40E-04(+3.75E-04-7.72E-05)(mcm\^2/sec/m),L(m)=30.0

**Without 3 and 7 sensors : \<A\>=4.04E-7**

![](media/image20.png){width="7.052777777777778in"
height="6.997222222222222in"}

Fig.15 First diffusion on 60 m \<A\>=6.93E-5

First Diffusion (1-3)
A=4.11E-05(+9.72E-05-4.12E-06)(mcm\^2/sec/m),L(m)=60.0

First Diffusion (2-4)
A=1.05E-06(+2.08E-06-5.04E-08)(mcm\^2/sec/m),L(m)=60.0

First Diffusion (3-5)
A=3.26E-05(+1.01E-04-4.22E-06)(mcm\^2/sec/m),L(m)=60.0

First Diffusion (4-6)
A=2.18E-07(+1.16E-06-2.52E-08)(mcm\^2/sec/m),L(m)=60.0

First Diffusion (5-7)
A=2.72E-04(+1.85E-04-4.01E-05)(mcm\^2/sec/m),L(m)=60.0

**Without 3 and 7 sensors : \<A\>=6.34E-7**

![](media/image21.png){width="6.919444444444444in"
height="7.058333333333334in"}

Fig.16 First diffusion on 90 m \<A\>=5.19E-5

First Diffusion (1-4)
A=1.14E-06(+2.46E-06-1.05E-07)(mcm\^2/sec/m),L(m)=90.0

First Diffusion (2-5)
A=9.16E-07(+2.08E-06-5.87E-08)(mcm\^2/sec/m),L(m)=90.0

First Diffusion (3-6)
A=2.37E-05(+6.77E-05-2.75E-06)(mcm\^2/sec/m),L(m)=90.0

First Diffusion (4-7)
A=1.82E-04(+1.26E-04-2.60E-05)(mcm\^2/sec/m),L(m)=90.0

**Without 3 and 7 sensors : \<A\>=10.2E-7**

![](media/image22.png){width="6.919444444444444in"
height="7.179166666666666in"}

Fig.17 First diffusion on 120 m \<A\>=4.63E-5

First Diffusion (1-5)
A=1.01E-06(+2.22E-06-8.82E-08)(mcm\^2/sec/m),L(m)=120.0

First Diffusion (2-6)
A=3.83E-07(+2.44E-06-3.85E-08)(mcm\^2/sec/m),L(m)=120.0

First Diffusion (3-7)
A=1.35E-04(+1.10E-04-2.12E-05)(mcm\^2/sec/m),L(m)=120.0

**Without 3 and 7 sensors : \<A\>=6.96E-7**

![](media/image23.png){width="6.922916666666667in"
height="6.606944444444444in"}

Fig.18 First diffusion on 150 m \<A\>=5.40E-5

**First Diffusion (1-6)
A=5.32E-07(+2.65E-06-5.77E-08)(mcm\^2/sec/m),L(m)=150.0**

First Diffusion (2-7)
A=1.07E-04(+7.74E-05-1.41E-05)(mcm\^2/sec/m),L(m)=150.0

![](media/image24.png){width="6.922916666666667in"
height="5.9319444444444445in"}

Fig.19 First Diffusion (1-7) A=8.45E-05 (mcm\^2/sec/m),L(m)=180.0

**Mean A for first diffusion on diapason 30-60-90-120-150-180 meters:
\<A\>= 7.01E-05**

**Mean A for first diffusion on diapason 30-60-90-120-150 meters without
3 and 7 sensors: \<A\>= 6.58E-07**

So we can suggest that something wrong is with sensor 3 and 7.

![](media/image25.png){width="7.052777777777778in"
height="9.004166666666666in"}

![](media/image26.png){width="7.052083333333333in"
height="5.9319444444444445in"}

Fig.20 Second Diffusion on 60 m \<A\>=9.80E-05

Second Diffusion (1-2-3)
A=4.05E-05(+1.01E-04-4.53E-06)(mcm\^2/sec/m),L(m)=60.0

Second Diffusion (2-3-4)
A=1.47E-04(+3.96E-04-1.71E-05)(mcm\^2/sec/m),L(m)=60.0

Second Diffusion (3-4-5)
A=3.42E-05(+1.01E-04-4.38E-06)(mcm\^2/sec/m),L(m)=60.0

**Second Diffusion (4-5-6)
A=4.67E-07(+1.18E-06-6.60E-08)(mcm\^2/sec/m),L(m)=60.0**

Second Diffusion (5-6-7)
A=2.68E-04(+1.91E-04-3.69E-05)(mcm\^2/sec/m),L(m)=60.0

![](media/image27.png){width="6.919444444444444in"
height="6.624305555555556in"}

Fig.21 Second Diffusion on 120 m \<A\>=8.08E-05

Second Diffusion (1-3-5)
A=7.26E-05(+1.96E-04-8.25E-06)(mcm\^2/sec/m),L(m)=120.0

**Second Diffusion (2-4-6)
A=8.82E-07(+8.52E-07-7.60E-8)(mcm\^2/sec/m),L(m)=120.0**

Second Diffusion (3-5-7)
A=1.69E-04(+1.56E-04-2.06E-05)(mcm\^2/sec/m),L(m)=120.0

![](media/image28.png){width="7.052083333333333in"
height="4.122222222222222in"}

Fig.22.Second Diffusion on 180 m

Second Diffusion (1-4-7)
A=9.87E-05(+6.59E-05-1.51E-05)(mcm\^2/sec/m),L(m)=180.0

**Mean A for second diffusion on diapason 60-120-180**

**meters: \<A\>= 9.25E-05**

**Mean A for second diffusion on diapason 60-120 meters without 3 and 7
sensors: \<A\>= 6.74E-07**

![](media/image29.png){width="6.004861111111111in"
height="3.3201388888888888in"}

B(dl) distribution

![](media/image30.png){width="6.004861111111111in"
height="3.196527777777778in"}

B(dl) distribution without 3,7 sensors

![](media/image31.png){width="4.052777777777778in"
height="2.7909722222222224in"}

A from sensor number distribution

![](media/image32.png){width="4.052777777777778in"
height="2.4881944444444444in"}

A from sensor number distribution without 3,7 sensors

**Conclusion**

**Year 2003**

**Mean A for first diffusion: \<A\>= 8.25E-07**

**Mean A for second diffusion: \<A\>= 2.32E-06**

**Year 2004**

**Mean A for first diffusion : \<A\>= 7.01E-05**

**without 3 and 7 sensors: \<A\>= 6.58E-07**

**Mean A for second diffusion: \<A\>= 9.25E-05**

**without 3 and 7 sensors: \<A\>= 6.74E-07**

27-Sep-04