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US 12,117,573 B2Granted
High-power seismic wave early warning method and system
AssigneeNational Applied Research Laboratories
InventorsChung-Che Chou, Shu-Hsien Chao, Che-Min Lin, Kung-Chun Lu, Yu-Tzu Huang
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Abstract
A high-power seismic wave early warning method is provided to use an earliest-arriving seismic wave to estimate a maximum power value of a later-arriving high-power seismic wave for a target site. When the estimated maximum power value of the later-arriving high-power seismic wave is greater than a warning value, an earthquake early warning is transmitted to an earthquake early warning device that is located at the target site.
Claims16
A high-power seismic wave early warning method, comprising steps of:
- A) by a power estimation module of a high-power seismic wave early warning system, based on at least one of a seismic wave parameter set that is acquired from a first seismic wave of an earthquake detected at an earthquake detection spot, a source parameter set that is related to the earthquake, or a site parameter set that is related to a target site, estimating a maximum power value of a second seismic wave that will arrive at the target site later than the first seismic wave, wherein the first seismic wave is an earliest one of multiple seismic waves of the earthquake that has arrived at the earthquake detection spot;
- the seismic wave parameter set includes one of a peak displacement value and a peak power value in first N seconds of the first seismic wave, where N≥1;
- the source parameter set includes a magnitude scale of the earthquake and a depth of a hypocenter of the earthquake;
- and the site parameter set includes one of a target-site location, shear wave velocity profile data of a soil layer at the target site, and microtremor horizontal-to-vertical (H/V) spectral ratio data at the target site, where the target-site location is represented using a longitude and a latitude of the target site;
- and
- B) by an early warning module of the high-power seismic wave early warning system, generating and transmitting an earthquake early warning to an earthquake early warning device that is located at the target site upon determining that the maximum power value of the second seismic wave thus estimated is greater than a warning value.
3 more elements
A high-power seismic wave early warning system, comprising:
- a communication interface configured to communicate with an earthquake early warning device that is located at a target site, and to receive one of wave data of a first seismic wave of an earthquake that is detected at an earthquake detection spot and a source parameter set that is related to the earthquake, wherein the first seismic wave is an earliest one of multiple seismic waves of the earthquake that has arrived at the earthquake detection spot, and the source parameter set includes a magnitude scale of the earthquake and a depth of a hypocenter of the earthquake;
- a storage unit storing a site parameter set that is related to the target site, and that includes one of a target-site location, shear wave velocity profile data of a soil layer at the target site, and microtremor horizontal-to-vertical (H/V) spectral ratio data at the target site, where the target-site location is represented using a longitude and a latitude of the target site;
- and
- a processing unit electrically connected to said communication interface and said storage unit, and configured to acquire a seismic wave parameter set of the first seismic wave upon receipt of the wave data of the first seismic wave, the seismic wave parameter set including one of a peak displacement value and a peak power value in first N seconds of the first seismic wave, where N≥1;
- wherein said processing unit includes:
- a power estimation module configured to, based on at least one of the seismic wave parameter set, the source parameter set and the site parameter set, estimate a maximum power value of a second seismic wave that will arrive at the target site later than the first seismic wave;
- and
- an early warning module configured to generate and transmit an earthquake early warning to the earthquake early warning device that is located at the target site upon determining that the maximum power value of the second seismic wave thus estimated is greater than a warning value.
5 more elements
Dependencies are inferred from the claim text.