Station 797. Southern Plains Map

YANTIS, TEXAS

Current details of installation.

Depth 5.0 km

Depth 6.7 km

Depth 5.0 km

Depth 3.2 km

Depth 5.0 km

Depth 10.0 km

Depth 15.0 km

Changed Seismograph frequency to 1.3 Hz on March 20, 2015, by shortening the rope suspending the mass.

M 2.6 - 2km NW of Venus, Texas at time of 2015-03-25 04:57:14 UTC Depth 5.0 km

Depth 4.0 km

Depth 1.4 km

Depth 1.9 km

Depth 5.3 km

Depth 120.9 km

Depth 4.7 km

Depth 4.5 km

Depth 5.0 km

Magnitude 3.4 earthquake was 18 km NW of Eutaw, Alabama on December 17, 2014 at time of 19:38:15 UTC.

Depth: 8.2 km.

Depth:2.8 km

Depth:4.8 km

Depth: 5.7 km

Depth: 35.0 km

Depth: 11.9 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 35.4 km

Depth: 20.7 km

Depth: 2.2 km

Depth: 5.4 km

Depth: 2.8 km

Depth: 5.0 km

Depth: 1.9 km

Depth: 2.0 km

Depth: 3.8 km

Depth: 6.0 km

Depth: 5.0 km

Depth: 123.0 km

Depth: 40.0 km

Update: Oct 12, 2014 20:50 UTC. Moved and releveled concrete slab. Changed CPVC pipe to a copper pipe to suspend mass. New quakes will be posted above this red line.

Depth: 6.4 km

Depth: 4.3 km

Depth: 10.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.3 km

Update: 22:14 UTC Oct 4, 2014. Moved seismograph off of concrete slab and buried bottom of it 8 inches in soil to prevent animals from bumping it. No other mechanical changes. New quakes will be posted above this red line.

Depth: 144.6 km

Depth: 5.0 km

Depth: 5.0 km

Depth: unknown

Depth: 4.2 km

Depth: 5.6 km

Depth: 7.7 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 102.8 km

Depth: 189.3 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 2.4 km

Depth: 3.3 km

Depth: 5.0 km

Depth: 2.6 km

Depth: 4.7 km

Depth: 5.0 km

Depth: 7.3 km

Depth: 4.4 km

Depth: 2.9 km

Depth: 4.0 km

Depth: 5.0 km

Depth: 4.2 km

September 13, 2014. At 19:47 UTC: Waiting for new quakes to be detected after changing to 16 oz glass jar weight of mass 39 oz. New quakes will be posted ABOVE this red line.

Depth: 5.4 km

Depth: 5.0 km

Depth: 6.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 2.2 km

Depth: 4.4 km

Depth: 4.9 km

Depth: 5.0 km

September 4, 2014. The bucket seismograph has been updated to use a 32 oz glass juice bottle. The bottle and magnets weigh 79 oz when filled with sand. A 6 inch long stack of 1 inch diameter ceramic magnets is centered in the bottle (the same type as before). The antenna used is the 8SR-0.1H-1K.

Current details of installation.

The swing frequency is a clean 1.055 Hz with less resonant spurs.

Depth: 3.8 km

Black tall trace at right is a large wide load truck passing on road. Magnetometer also detected the truck. A 3.4 earthquake at this distance (from Enid Oklahoma) is not strong enough to be detected on the magnetometer.

Depth: 66.3 km

Depth: 101.0 km

Depth: 10.7 km

M 3.0 - 14km NE of Cherokee, Oklahoma.

Time 08-22-2014. 19:23:11 UTC

Depth 4.0km

M 2.8 - 15km N of Stillwater, Oklahoma.

Time 08-20-2014. 22:54:00 UTC

Depth 5.0km

Depth: 3.5 km

Depth: 8.9 km

Depth: 5.0 km

August 17, 2014. Installed 7 pounds of sand and a 6 inch magnet stack and 10SR-01.H-100H antenna into bucket seismograph for testing. 2-rope swing dampening. Seismograph sitting on 16 x 16 concrete slab. Resonant frequency: 1.118 Hz.

Magnitude 5.8 earthquate was 16 km W of Santiago Pinotepa Nacional, Mexico at Time of 06:48:11 UTC on 08-13-2014. Depth 10.0km

08-12-2014. Installed new bucket seismograph for testing on concrete block 16 x 16 inches. Frequency 0.879 Hz. String dampening.

Depth: 95.1 km

Depth: 7.6 km

Depth: 11.6 km

Depth: 9.5 km

Depth: 5.0 km

Depth: 6.2 km

Depth: 60.0 km

Depth: 5.0 km

Depth: 4.9 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 107.5 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 12 km

Depth: unknown

Depth: 10.9 km

Depth: 127.5 km

Depth: 8.2 km

Depth: 62.7 km

Depth:5.0 km

Depth:24.5 km

Depth:10.0 km

On 05-11-2014 reinstalled 8SR-1H-1K antenna into Bucket Seismograph 3. Frequency is 1.094 Hz.

Depth:23.0km

Depth:24.0km

Depth: 4.8 km

Depth: 5.0 km

On 05-02-2014 installed new test antenna part number 10SR-0.1H-20H into Bucket Seismograph. Frequency is 1.094 Hz.

Depth: 4.0 km

Depth: 5 km

Depth: 4 km

On 04-25-2014 installed new test antenna part number 8SR-0.3H-30H into Bucket Seismograph. Frequency is 1.094 Hz.

The following earthquakes were recorded with our Bucket Seismograph 3 and 8SR-1H-1K antenna. Frequency is 1.094 Hz.

Depth: 11.4 km

Depth: 8.3 km

Depth: 43.6 km

Depth: 4.1 km

Depth:24 km

Depth: 5 km

Depth: 14.8 km

Depth: 5.0 km

Depth: 2.8 km

Depth: 138.6 km

The following earthquakes were recorded with our Bucket Seismograph 2 and AF4T antenna.

New frequency is 1.094 Hz on 03-29-2014 at 00:26 UTC.

Depth: 7.0 km

Depth: 3.4 km

Depth: 5.2 km

Depth: 5.1 km

Depth: 2.5 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 40.0 km

Depth: 20.1 km

Depth: 5.7 km

Depth: 4.7 km

Depth: 5.0 km

Depth: 5.4 km

Depth: 4.3 km

Depth: 5.0 km

Depth: 6.1 km

Depth: 4.5 km

Depth: 10.0 km

Depth: 3.9 km

Depth: 5.0 km

Depth: 5.4 km

Depth: 10.6 km

Depth: 6.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 16.6 km

Depth: 10.0 km

Depth: 5.0 km

Depth: 4.8 km

Depth: 5.0 km

Depth: 6.8 km

Depth: 49.1 km

Depth: 72.6 km

Depth: 8.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 4.8 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 16.9 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 7.1 km

Depth: 10 km

Depth: 9 km

Depth: 11 km

On February 8, 2014, Installed new seismograph 'bucket seismograph # 2' (on channel 2) with 4.75 inch magnet suspended in glass bottle (see plans for 'bucket seismograph # 2' on this web site). Receiving at 1.03 Hz. Model AF4T-0.1H-40H-BC-EB.

The first seismograph (on channel 1) which was newly installed on December 13, 2013 is still running alongside the new unit for comparison, with no modifications to date.

Top trace # 1 is the older seismograph. Lower trace # 2 is the Bucket Seismograph # 2.

Depth: 4.9 km

Depth: 5.0 km

Depth: 5.1 km

Depth: 5.0 km

The second earthquake recorded with the Bucket Seismograph # 2, occurred 2 days after the installation. The bottom seismogram is recorded with the 'Bucket Seismograph # 2'.

Depth: 4.8 km

The first earthquake recorded with the Bucket Seismograph # 2, occurred several hours after the installation, just in time to catch it.

Magnitude 4.1 was 7 km S of Langston, Oklahoma on Feb 9, 2014 at time of 02:16:01 UTC.

Depth 4.8 km

The top seismogram is from a 6-inch (AF6T) antenna suspended over a 2 inch magnet.

**The bottom seismogram is from the Bucket Seismograph # 2 with the AF4T antenna and 4.75 inch magnet.**

Recordings below were made on the seismograph that was installed on December 13, 2013. On that date, installed new seismograph case with stronger magnet. Receiving at 1.14 Hz. Model AF6T seismograph antenna in 15 inch case buried 10 inches.

Depth: 4.8 km

Depth: 5.0km

Depth: 5.0km

Depth: 9.9 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 28.0 km

Depth: 80.7 km

Depth: 10.0 km

Depth: 4.7 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 4.6 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 4.3 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 4.3 km

Depth: 6.5 km

Depth: 5.0 km

Depth: 4.7 km

Depth: 5.0 km

Depth: 5.0 km

Depth: 4.8 km

Depth: 4.1 km

On November 15, 2013 until December 13, 2013. Began receiving at 1.094 Hz. Seismograph is using AF6T antenna in 15 inch case buried 10 inches in ground. Resonant period 1.094 Hz.

Depth: 5.0 km.

Depth: 5.0 km.

Depth: 64.1 km.

Depth: 5.0 km.

Depth: 9.2 km.

Depth: 5.0 km.

Depth: 5.0 km.

Depth: 5.0 km.

Depth: 8.5 km.

Depth: 5.0 km.

Depth: 4.7 km.

Depth: 5.0 km.

Depth: 5.0 km.

Depth: 5.0 km.

Spectrogram showing bandwidth response of AF6T antenna suspended in 15 inch case via a 3 inch long piece of nylon cord. Resonant peak is at 1.094 Hz. Earthquake in Azle, Texas above was the source of excitation for this spectrogram.

Below are earthquakes recorded using AF6T seismograph antenna mounted in 24 inch case buried 12 inches in ground. Resonant period is 0.84 Hz.

Depth: 6.3 km.

Depth: 5.3 km.

Depth: 5.0 km.

Depth: 4.8 km.

Depth: 5.0 km.

Depth: 5.0 km.

Depth: 5.9 km.

Depth: 7.1 km.

Depth: 5.0 km.

Depth: 5.1 km.

Earthquakes recorded with above seismograph using updated circuit and AF4T seismic antenna. Resonant period 0.7 Hz, no changes in outdoor seismic sensor.

Earthquakes below recorded using antenna part number AF10T-0.1H-2K-BC-EB and the above 2 transistor circuit connected to a DATAQ data logger DI-148U.

Sample rate 20 samples per second. 10 Hz maximum bandwidth. Main Pendulum frequency is 0.7 Hz. Not damped. Chart rate shown is 5 seconds per division.

Seismograph Antenna |
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Use this seismograph antenna to detect earthquakes. Detects both "P" and "S" waves from all directions.

On February 16, 2014. moved 'Bucket Seismograph # 2' to channel 1. Removed older seismograph. Installed experimental Seismomagnetometer.

2.7 7km WNW of Midlothian, Texas 2015-01-08 20:12:44 UTC+00:00 5.0 km 2.7 5km NE of Irving, Texas 2015-01-07 15:57:29 UTC+00:00 5.0 km 2.7 4km ENE of Irving, Texas 2015-01-07 14:34:02 UTC+00:00 5.0 km 3.1 4km NE of Irving, Texas 2015-01-07 06:59:03 UTC+00:00 5.0 km 2.7 4km NE of Irving, Texas 2015-01-07 02:12:16 UTC+00:00 4.0 km 2.9 5km ENE of Irving, Texas 2015-01-07 02:11:17 UTC+00:00 5.0 km 3.6 6km ENE of Irving, Texas 2015-01-07 00:52:09 UTC+00:00 5.0 km 3.5 22km NNE of Snyder, Texas 2015-01-06 21:55:19 UTC+00:00 4.2 km 3.5 5km ENE of Irving, Texas 2015-01-06 21:10:31 UTC+00:00

2.5 6km SSW of Perry, Oklahoma 2015-01-09 07:44:02 UTC+00:00 5.1 km 4.0 5km S of Guthrie, Oklahoma 2015-01-09 06:44:16 UTC+00:00 5.0 km 3.0 18km WNW of Helena, Oklahoma 2015-01-08 22:03:42 UTC+00:00 5.0 km 2.7 5km SSE of Anthony, Kansas 2015-01-08 11:47:35 UTC+00:00 5.0 km 3.0 22km ENE of Cherokee, Oklahoma 2015-01-08 05:07:00 UTC+00:00 4.6 km 3.8 6km S of Guthrie, Oklahoma 2015-01-07 19:41:37 UTC+00:00 6.9 km 2.6 5km SSW of Perry, Oklahoma 2015-01-07 16:30:42 UTC+00:00 5.5 km 2.8 7km SSW of Guthrie, Oklahoma 2015-01-07 16:14:26 UTC+00:00 6.8 km 2.9 21km S of Medford, Oklahoma 2015-01-07 10:25:31 UTC+00:00 5.2 km 2.7 22km E of Cherokee, Oklahoma 2015-01-06 23:13:38 UTC+00:00 6.0 km 3.0 13km SSE of Medford, Oklahoma 2015-01-06 23:10:48 UTC+00:00 4.8 km 2.5 15km SW of Medford, Oklahoma 2015-01-06 23:03:48 UTC+00:00 6.2 km 2.5 4km SSE of Perry, Oklahoma 2015-01-06 18:29:22 UTC+00:00 5.8 km 3.1 3km S of Perry, Oklahoma 2015-01-06 18:28:04 UTC+00:00 5.2 km 2.8 3km SSE of Perry, Oklahoma 2015-01-06 18:27:16 UTC+00:00 5.5 km 2.9 4km SE of Perry, Oklahoma 2015-01-06 18:05:31 UTC+00:00 5.5 km 2.8 4km SSE of Perry, Oklahoma 2015-01-06 17:50:22 UTC+00:00 5.7 km 3.1 4km SE of Perry, Oklahoma 2015-01-06 15:45:15 UTC+00:00 5.5 km 3.6 3km SE of Perry, Oklahoma 2015-01-05 22:27:39 UTC+00:00 3.4 km 2.9 3km SSE of Perry, Oklahoma 2015-01-05 22:22:54 UTC+00:00 5.0 km 2.6 4km SE of Perry, Oklahoma 2015-01-05 22:13:28 UTC+00:00 4.9 km 3.6 3km SE of Perry, Oklahoma 2015-01-05 22:06:43 UTC+00:00 5.0 km 2.9 7km ESE of Harper, Kansas 2015-01-05 21:54:35 UTC+00:00 5.5 km 2.6 5km NW of Yale, Oklahoma 2015-01-05 15:23:30 UTC+00:00 4.2 km 3.1 21km E of Cherokee, Oklahoma 2015-01-05 13:52:06 UTC+00:00 6.5 km 3.0 21km S of Anthony, Kansas 2015-01-05 12:57:34 UTC+00:00 5.0 km 3.5 24km WSW of Medford, Oklahoma 2015-01-05 12:14:20 UTC+00:00 5.0 km 2.5 4km SSW of Harper, Kansas 2015-01-04 23:57:18 UTC+00:00 5.0 km 2.7 19km SSE of Medford, Oklahoma 2015-01-04 22:41:12 UTC+00:00 6.4 km 3.7 4km SSW of Guthrie, Oklahoma 2015-01-04 21:37:01 UTC+00:00 4.1 km 3.5 5km SSE of Harper, Kansas 2015-01-04 10:55:40 UTC+00:00 6.6 km 2.9 7km S of Guthrie, Oklahoma 2015-01-03 21:31:35 UTC+00:00 7.7 km 3.0 13km NNE of Cherokee, Oklahoma 2015-01-03 18:28:47 UTC+00:00 6.3 km 2.6 12km S of Crescent, Oklahoma 2015-01-03 18:07:58 UTC+00:00 7.3 km 3.2 20km SSE of Medford, Oklahoma 2015-01-03 16:54:48 UTC+00:00 4.4 km 3.3 7km W of Medford, Oklahoma 2015-01-03 12:16:30 UTC+00:00 3.9 km 2.6 8km N of Medford, Oklahoma 2015-01-03 08:42:41 UTC+00:00 5.0 km 2.6 7km S of Guthrie, Oklahoma 2015-01-02 20:21:29 UTC+00:00 7.1 km 2.5 7km S of Guthrie, Oklahoma 2015-01-02 19:38:09 UTC+00:00 6.8 km 2.7 7km SE of Cherokee, Oklahoma 2015-01-02 09:23:24 UTC+00:00

5.0 298km S of Punta de Burica, Panama 2015-01-07 05:36:07 UTC+00:00 10.0 km 6.6 245km S of Punta de Burica, Panama 2015-01-07 05:07:08 UTC+00:00 10.0 km 4.8 18km N of El Espinal, Mexico 2015-01-04 05:16:38 UTC+00:00 113.6 km 4.5 0km NNE of Guananico, Dominican Republic 2015-01-02 19:11:45 UTC+00:00 26.5 km 4.8 Central East Pacific Rise 2015-01-02 11:01:23 UTC+00:00