Seismic monitoring of the geothermal project Groß

Seismic monitoring of the geothermal project Groß

Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic monitoring of the geothermal project
Groß-Gerau: ground noise analysis and
nanoseismic field campaigns
Patrick Blascheck and Manfred Joswig
Institut für Geophysik
Universität Stuttgart
28. November 2012
28.11.12
P. Blascheck
AGIS Workshop
1
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Table of Contents
28.11.12
1
Motivation
2
Nanoseismic Monitoring
3
Noise mapping
4
Examination of historical swarm earthquake activity
5
Active fault mapping
P. Blascheck
AGIS Workshop
2
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
50˚15'
N
W
Permission Area
3D seismics Area
E
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Groß−Gerau
Darmstadt
49˚45'
Bensheim
Worms
km
0
49˚30'
8˚00'
28.11.12
8˚30'
P. Blascheck
10
20
9˚00'
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
50˚15'
N
W
Permission Area
3D seismics Area
E
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Groß−Gerau
Darmstadt
49˚45'
Bensheim
Worms
km
0
49˚30'
8˚00'
28.11.12
8˚30'
P. Blascheck
10
20
9˚00'
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
28.11.12
P. Blascheck
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
aims
monitoring of background seismicity
monitoring of induced seismicity (drilling phase and later)
distinguish background and induced seismicity
28.11.12
P. Blascheck
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
aims
monitoring of background seismicity
monitoring of induced seismicity (drilling phase and later)
distinguish background and induced seismicity
28.11.12
P. Blascheck
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
aims
monitoring of background seismicity
monitoring of induced seismicity (drilling phase and later)
distinguish background and induced seismicity
28.11.12
P. Blascheck
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
SiMon
“Seismisches Monitoring im Zusammenhang mit der geothermischen Nutzung des
nördlichen Oberrheingrabens”
relevant project details:
geothermal power plant with Pel ∼ 3 MW and Ptherm ∼ 6 MW
borehole not sinked yet
aims
monitoring of background seismicity
monitoring of induced seismicity (drilling phase and later)
distinguish background and induced seismicity
examination of historical (1869-71) swarm earthquake activity
28.11.12
P. Blascheck
AGIS Workshop
3
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Project partners
long-term monitoring by the
Hessische Landesamt für Umwelt und Geologie (HLUG)
(ML,thresh = 2.5) and the
Universität Frankfurt (AG Seismologie) (ML,thresh = 1.0)
highly sensitive temporary monitoring by the
Institute for Geophysics, Universität Stuttgart
(ML,thresh = −0.5)
28.11.12
P. Blascheck
AGIS Workshop
4
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Project partners
long-term monitoring by the
Hessische Landesamt für Umwelt und Geologie (HLUG)
(ML,thresh = 2.5) and the
Universität Frankfurt (AG Seismologie) (ML,thresh = 1.0)
highly sensitive temporary monitoring by the
Institute for Geophysics, Universität Stuttgart
(ML,thresh = −0.5)
28.11.12
P. Blascheck
AGIS Workshop
4
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Measurement technique
Sensors
1x 3 component (V, NS, EW)
seismometer
3x 1 component (V)
seismometer
2x microphone
400-1000 Hz sampling rate
40-200 m aperture
28.11.12
P. Blascheck
AGIS Workshop
5
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic networks
50˚15'
N
W
Permission Area
3D seismics Area
E
HLUG 3C
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Groß−Gerau
Darmstadt
WBB
GODD
49˚45'
Bensheim
Worms
km
0
49˚30'
8˚00'
28.11.12
8˚30'
P. Blascheck
10
20
9˚00'
AGIS Workshop
6
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic networks
50˚15'
N
W
Permission Area
3D seismics Area
E
HLUG 3C
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Leydecker 800−2008
BGR 2008−10/2012
Rüsselsheim
Groß−Gerau
Darmstadt
WBB
800
2008
2013
year
GODD
49˚45'
intensity
10
Bensheim
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
6
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic networks
50˚15'
N
W
Permission Area
3D seismics Area
E
S
HLUG 3C
Frankfurt 3C
Frankfurt am Main
Wiesbaden
50˚00'
Leydecker 800−2008
BGR 2008−10/2012
Mainz
Rüsselsheim
MOEN
BAUS NAUH
WORF
HECH
BODEHESS
DEXH
Groß−Gerau
WALL
WEIT
RIED
Darmstadt
WBB
800
2008
2013
year
GODD
ERNS
49˚45'
intensity
10
Bensheim
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
6
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic networks
50˚15'
N
W
Permission Area
3D seismics Area
Mapping of Background Noise
HLUG 3C
Frankfurt 3C
E
S
Frankfurt am Main
Wiesbaden
50˚00'
Leydecker 800−2008
BGR 2008−10/2012
Mainz
Rüsselsheim
MOEN
BAUS NAUH
WORF
HECH
BODEHESS
DEXH
Groß−Gerau
WALL
WEIT
RIED
Darmstadt
WBB
800
2008
2013
year
GODD
ERNS
49˚45'
intensity
10
Bensheim
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
6
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Seismic networks
50˚15'
N
W
Permission Area
3D seismics Area
Mapping of Background Noise
HLUG 3C
Frankfurt 3C
NSM SNS/3C
Leydecker 800−2008
BGR 2008−10/2012
E
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Rüsselsheim
MOEN
BAUS NAUH
WORF
HECH
BODEHESS
DEXH
Groß−Gerau
WALL
WEIT
RIED
Darmstadt
WBB
800
2008
2013
year
GODD
ERNS
49˚45'
intensity
10
Bensheim
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
6
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Mapping of background noise
33 different
locations
minimum 15 min.
noise measurement
I95 as criterion
28.11.12
P. Blascheck
AGIS Workshop
7
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Mapping of background noise
MOEN
N
W
Permission Area
3D seismics Area
E
HLUG 3C
Frankfurt 3C
NSM SNS/3C
NAUH
S
BAUS
49˚57'
WORF
800
Groß−Gerau
2008
2013
year
HESS
800
WALL
49˚54'
2012 2013
WEIT
km
0
8˚24'
28.11.12
5
8˚30'
P. Blascheck
AGIS Workshop
7
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Mapping of background noise
28.11.12
P. Blascheck
AGIS Workshop
7
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Mapping of background noise
28.11.12
P. Blascheck
AGIS Workshop
7
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Conclusions of noise mapping campaign
locations of low ground noise ( =
ˆ < 30nm/s) were identified
estimated detection threshold in 5 km ML = −0.5 for these
locations
28.11.12
P. Blascheck
AGIS Workshop
8
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Table of Contents
28.11.12
1
Motivation
2
Nanoseismic Monitoring
3
Noise mapping
4
Examination of historical swarm earthquake activity
5
Active fault mapping
P. Blascheck
AGIS Workshop
9
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Historic swarm earthquakes and measurements
50˚15'
N
W
E
S
Frankfurt am Main
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Swarm earthquakes 1869−1871:
Leydecker
Landsberg:
< 5 events
76 events
Groß−Gerau
Darmstadt
800 1869
1871
2013
year
800 1869
1871
2013
49˚45'
intensity
Bensheim
10
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
9˚00'
AGIS Workshop
10
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Historic swarm earthquakes and measurements
50˚15'
N
W
E
S
Frankfurt am Main
NSM SNS/3C
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Swarm earthquakes 1869−1871:
Leydecker
Landsberg:
< 5 events
76 events
Groß−Gerau
Darmstadt
800 1869
800
1869
1871
2013
year
1871
2013
800
49˚45'
2012 2013
intensity
Bensheim
10
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
9˚00'
AGIS Workshop
10
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Historic swarm earthquakes and measurements
50˚15'
N
W
E
S
Frankfurt am Main
NSM SNS/3C
Wiesbaden
50˚00'
Mainz
NSM events
Swarm earthquakes 1869−1871:
Leydecker
Landsberg:
< 5 events
76 events
Rüsselsheim
Groß−Gerau
Darmstadt
800 1869
800
1869
1871
2013
year
1871
2013
800
49˚45'
2012 2013
intensity
Bensheim
10
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
10
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Comparing events with known faults
50˚15'
N
W
E
S
Frankfurt am Main
NSM SNS/3C
Leydecker 800−2008
BGR 2008−10/2012
NSM events
Swarm earthquakes 1869−1871:
Leydecker
Landsberg:
< 5 events
76 events
Wiesbaden
50˚00'
Mainz
Rüsselsheim
Groß−Gerau
Darmstadt
800
2008
2013
year
800
1869
1871
800
1869
1871
2013
2013
800
49˚45'
2012 2013
intensity
Bensheim
10
9
8
7
Worms
6
5
4
km
0
49˚30'
8˚00'
28.11.12
10
3
2
20
1
8˚30'
P. Blascheck
magnitude
4
3
2
1
0
−1
−2
9˚00'
AGIS Workshop
11
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Comparing events with known faults
Source: Wenke et al. (2009)
28.11.12
P. Blascheck
AGIS Workshop
11
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Comparing events with known faults
28.11.12
P. Blascheck
AGIS Workshop
11
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Conclusions of historic swarm earthquakes and fault
mapping
currently no swarm like activity inside the graben
hints on active fault zone found
locations of low ground noise were identified
estimated detection threshold in 5 km ML = −0.5
verification of fault mapping
reevaluation of noise mapping based on final location of bore
hole
28.11.12
P. Blascheck
AGIS Workshop
12
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Conclusions of historic swarm earthquakes and fault
mapping
currently no swarm like activity inside the graben
hints on active fault zone found
locations of low ground noise were identified
estimated detection threshold in 5 km ML = −0.5
verification of fault mapping
reevaluation of noise mapping based on final location of bore
hole
28.11.12
P. Blascheck
AGIS Workshop
12
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Conclusions and outlook
currently no swarm like activity inside the graben
hints on active fault zone found
locations of low ground noise were identified
estimated detection threshold in 5 km ML = −0.5
verification of fault mapping
reevaluation of noise mapping based on final location of bore
hole
28.11.12
P. Blascheck
AGIS Workshop
12
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Conclusions and outlook
currently no swarm like activity inside the graben
hints on active fault zone found
locations of low ground noise were identified
estimated detection threshold in 5 km ML = −0.5
verification of fault mapping
reevaluation of noise mapping based on final location of bore
hole
28.11.12
P. Blascheck
AGIS Workshop
12
Motivation
Nanoseismic Monitoring
Noise mapping
Examination of historical swarm earthquake activity
Active fault mapping
Thank you for your Attention!
Acknowledgments:
We would like to thank the Federal Ministry for the Environment,
Nature Conservation and Nuclear Safety (BMU) for funding this
project as well as the Forstamt Lampertheim for their support
28.11.12
P. Blascheck
AGIS Workshop
13