MDA
OK
CROK
--
HHN
MetaData Aggregator
Channel Summary
A
= Open data access
P
= Partially restricted data access
R
= Restricted data access
X
= Data is not available
?
= No availability information
Legend:
A
P
R
X
?
Results limited by date range:
2013-08-07T00:00:00
-
2026-04-21T21:20:00
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Context
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Context
Networks (1 time spans)
OK 1978-01-01 2599-12-31
Station Epochs (1 time spans)
CROK 2013-08-07 2599-12-31
Channel Epochs (2 time spans)
HHN 2026-04-21T21:23:00 2599-12-31T23:59:59
HHN 2013-08-07T00:00:00 2026-04-21T21:20:00
OK : CROK : -- : HHN (2026-04-21 - 2599-12-31)
Network
OK
Map
DOI
Station
CROK
Map
Location
--
Channel
HHN
Instrument
Trillium Cascadia seismometer, 120 s, 754 V/m/s-Ce
Start
2026-04-21T21:23:00 (111)
End
2599-12-31T23:59:59 (365)
Data Center
IRISDMC
Latitude
36.504737
Longitude
-97.983354
Elevation (m)
403.0
Depth (m)
2.0 (Local depth or overburden)
Azimuth
0.0 (SEED convention: Clockwise from north, Z=0, reversed=0)
Dip
0.0 (SEED convention: From horizontal, Z=-90, reversed=90)
Sample Rate (Hz)
100.0
Units
M/S
Sensitivity
3.0172E8 @ 1.0 Hz (SEED Stage 0)
IRISDMC Response (
XML
)
IRISDMC metadata changes:
View IRISDMC Metadata Changes
Virtual network affiliations:
Name
Description
_OGS
Oklahoma Geological Survey Seismic Monitoring Program
_US-REGIONAL
US Regional Networks
OK : CROK : -- : HHN (2013-08-07 - 2026-04-21)
Network
OK
Map
DOI
Station
CROK
Map
Location
--
Channel
HHN
Instrument
CMG-3ESP, 120 s, 2000 V/m/s-RT130S, gain 1, 100 sp
Start
2013-08-07T00:00:00 (219)
End
2026-04-21T21:20:00 (111)
Data Center
IRISDMC
Latitude
36.504737
Longitude
-97.983354
Elevation (m)
403.0
Depth (m)
1.0 (Local depth or overburden)
Azimuth
0.0 (SEED convention: Clockwise from north, Z=0, reversed=0)
Dip
0.0 (SEED convention: From horizontal, Z=-90, reversed=90)
Sample Rate (Hz)
100.0
Units
M/S
Sensitivity
2.16455E9 @ 0.05 Hz (SEED Stage 0)
IRISDMC Response (
XML
)
IRISDMC metadata changes:
View IRISDMC Metadata Changes
Virtual network affiliations:
Name
Description
_OGS
Oklahoma Geological Survey Seismic Monitoring Program
_US-REGIONAL
US Regional Networks
08:48:58
v.1.1.1