It consists of 25 seismographic stations relaying information to 26 national tsunami information centers, as well as three deep-ocean sensors.

AU the people in the palace will be aware of is a slight shake, if that, a tremor that wouldn't raise any eyebrows at the nearest seismographic station, wherever that may be.

The second team, which is not part of the official experiment, is positioned at a Soviet-designed seismographic station on the California-Nevada border.

The seismographic stations are a long way from it and we know almost nothing about the sea bed stratas.

Much of the data came from a network of hundreds of seismographic stations called Tri-Net.

The temblors are too small and distant to be felt on land, but have been recorded at seismographic stations on South Georgia, Punta Arenas, the South Sandwich Islands, and the Falkland Islands.

Following the relief efforts, 19 seismographic stations were installed to monitor seismic activities.

The fireball was recorded by satellites maintained by the U.S. Department of Defense and seismographic stations within Canada.

Installation of these seismographic stations proceeds under an agreement between the Soviet Academy of Sciences, the United States Geological Survey and the Incorporated Research Institutions for Seismology, a United States consortium.

Using newly implemented telemetric seismographic stations, they were able to record both P-wave and S-wave arrivals from earthquakes up to 260 km beneath the volcanic area.