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Instrument that records seismic waves by measuring ground motions
A seismometer is an instrument that responds to ground displacement and shaking caused by quakes, volcanic eruptions, and explosions. They are usually
Seismometer
Instrument for measuring strength of earthquakes
The Wood–Anderson seismometer (also known as the Wood–Anderson seismograph) is a torsion seismometer developed in the United States by Harry O. Wood and
Wood–Anderson_seismometer
Type of seismometer
An ocean-bottom seismometer (OBS) is a seismometer that is designed to record the earth's motion under oceans and lakes from man-made sources and natural
Ocean-bottom_seismometer
Study of ground motions of the Moon
Package). The existence of moonquakes was an unexpected discovery from seismometers placed on the Moon by Apollo astronauts from 1969 through 1972. The Apollo
Lunar_seismology
120PA broadband seismometer with a Reftek-147 accelerometer while others continue to operate the Guralp CMG-40T broadband seismometer. All stations have
Weston Observatory (Boston College)
Weston_Observatory_(Boston_College)
NASA Mars lander (2018–2022)
(1480 days; 4 years, 19 days). InSight's objectives were to place a seismometer, called Seismic Experiment for Interior Structure (SEIS), on the surface
InSight
Point on the Earth's surface that is directly above the hypocenter in an earthquake
earthquake or an underground explosion originates. The primary purpose of a seismometer is to locate the initiating points of earthquake epicenters. The secondary
Epicenter
Mechanism for regulating the speed of clocks
Pendulums are also used in scientific instruments such as accelerometers and seismometers. Historically, pendulums were used as gravimeters to measure the acceleration
Pendulum
American seismologist (1879–1958)
into the field of seismology. In the 1920s he co-developed the torsion seismometer, a device tuned to detect short-period seismic waves that are associated
Harry_O._Wood
and uppermost mantle. They range from weak events detectable only by seismometers, to sudden and violent events lasting many minutes which have caused
Lists_of_earthquakes
Scientific study of earthquakes and propagation of elastic waves through a planet
of the first modern seismometers by James David Forbes, first presented in a report by David Milne-Home in 1842. This seismometer was an inverted pendulum
Seismology
Recording device in geology
were clear differences between geophones and seismometers. Compared to conventional geophones, seismometers are more suitable for detecting extremely small
Geophone
Seismic event occurring on Mars
& 2 in 1976, with seismometers mounted on top of the lander. The seismometer on the Viking 1 lander failed. The Viking 2 seismometer collected data for
Marsquake
1962 robotic lunar exploration mission by NASA; malfunctioned
10 minutes of flight prior to impacting on the Moon, to rough-land a seismometer capsule on the Moon, to collect gamma-ray data in flight, to study radar
Ranger_3
Vibrational energy transfer in Earth or other planetary body
Seismic waves are studied by seismologists, who record the waves using seismometers, hydrophones (in water), or accelerometers. Seismic waves are distinguished
Seismic_wave
Measure of the strength of earthquakes
1 μm (0.001 mm) on a seismogram recorded by a Wood-Anderson torsion seismometer. Finally, Richter calculated a table of distance corrections, in that
Richter_scale
Surface shaking on interstellar bodies in general
to damp seismic vibrations. Information about moonquakes comes from seismometers placed on the Moon from 1969 through 1972. The instruments placed by
Quake_(natural_phenomenon)
1969 American experiment on the Moon
activity, physical nature, and composition of the Moon. PSEP was the first seismometer to be deployed on a planetary body other than Earth. The California Institute
Passive Seismic Experiment Package
Passive_Seismic_Experiment_Package
American football running play in a 2010 NFC wild card playoff game
celebration of Seahawks fans registering at magnitude 2.0 on a nearby seismometer. The Saints came into the game as the 5th-seeded wild card in the NFC
Beast_Quake
Building in Perth and Kinross, Scotland
and quakes than anywhere else in the United Kingdom. The first modern seismometer was invented in Comrie in 1840 and the building put up 32 years later
Earthquake_House
2026 lunar landing mission
demonstration payloads to the lunar farside, where it will deploy a seismometer and a rover and operate a radio telescope. The mission is led by Firefly's
Blue_Ghost_Mission_2
Movement of the Earth's surface
motion is measured using a seismometer, a device that detects and records the movement of the Earth's surface. Seismometers are used by seismologists to
Ground_motion
Japanese alert system
is an alert that is issued when an earthquake is detected by multiple seismometers. These warnings are primarily issued by the Japan Meteorological Agency
Earthquake Early Warning (Japan)
Earthquake_Early_Warning_(Japan)
1995 domestic terrorist attack in Oklahoma, US
300 kg) of TNT, and could be heard and felt up to 55 miles (89 km) away. Seismometers at the Omniplex Science Museum in Oklahoma City, 4.3 miles (6.9 km) away
Oklahoma_City_bombing
Series of water waves
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Tsunami
Alert system for in-progress earthquakes
earthquake early warning (EEW) system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for rapidly notifying
Earthquake early warning system
Earthquake_early_warning_system
Aborted Moon landing mission in the Apollo program
believed to have drilled deep into the lunar regolith. Apollo 11 had left a seismometer on the Moon, but the solar-powered unit did not survive its first two-week-long
Apollo_13
caused by the earthquake is gradually reduced. Due to the limitation of seismometers designed in the early years, some seismic magnitude scales began to show
Epicentral_distance
System of linked seismometers
A seismic array is a system of linked seismometers arranged in a regular geometric pattern (cross, circle, rectangular etc.) to increase sensitivity to
Seismic_array
Scientific instrument aboard the InSight Mars lander
The Seismic Experiment for Interior Structure (SEIS) is a seismometer and the primary scientific instrument on board the InSight Mars lander launched
Seismic Experiment for Interior Structure
Seismic_Experiment_for_Interior_Structure
Geographical phenomenon
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Remotely triggered earthquakes
Remotely_triggered_earthquakes
time of the direction of sudden earthquakes with the invention of the seismometer that was tripped by a vibration-sensitive pendulum device. To mark the
Science and technology of the Han dynasty
Science_and_technology_of_the_Han_dynasty
Arrival of a spacecraft on the Moon's surface
the U.S. to perform a successful hard Moon landing with a ruggedized seismometer package in 1962 all failed. The Soviets first achieved the milestone
Moon_landing
Failed NASA lunar impactor (1962)
10 minutes of flight prior to impacting on the Moon, to rough-land a seismometer capsule on the Moon, to collect gamma-ray data in flight, to study radar
Ranger_5
Seismic intensity scale used to quantify the degree of shaking during earthquakes
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Modified Mercalli intensity scale
Modified_Mercalli_intensity_scale
Type of earthquake at convergent plate boundaries
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Megathrust_earthquake
Megathrust earthquake off Japan's east coast
the Earthquake Early Warning system, which includes more than 1,000 seismometers in Japan, sent out warnings of impending strong shaking to millions.
2011 Tōhoku earthquake and tsunami
2011_Tōhoku_earthquake_and_tsunami
Personal seismometer
the COVID-19 lockdown at the city scale: a case study with low-cost seismometers in the city of Querétaro, Mexico". Solid Earth. 12: 713–724. 2021. doi:10
Raspberry_Shake
Flash flood disaster in Nepal and China
the Himalayas, caused a chain reaction whose tremors were detected by seismometers worldwide, with magnitudes reaching Ms 5.2. According to experts at the
2026_Nepal–Tibet_floods
Earthquake in Canada
This was the second largest Canadian earthquake ever recorded by a seismometer, after the 1949 Queen Charlotte Islands earthquake, about 135 kilometres
2012_Haida_Gwaii_earthquake
electronics module. The sensor unit contained three matched long-period (LP) seismometers aligned orthogonally in a triaxial set to measure one vertical and two
Apollo 12 Passive Seismic Experiment
Apollo_12_Passive_Seismic_Experiment
Research institute
a staff of nearly 500 persons. The lead investigator (P.I.) for the seismometer instrument on the international space mission to Mars, InSight (launched
Institut de Physique du Globe de Paris
Institut_de_Physique_du_Globe_de_Paris
1985 aviation accident in Japan
ridge, near Mount Takamagahara, and exploded. The impact registered on a seismometer located in the Shin-Etsu Earthquake Observatory at Tokyo University from
Japan_Air_Lines_Flight_123
Natural satellite orbiting Earth
crust. The existence of moonquakes was an unexpected discovery from seismometers placed on the Moon by Apollo astronauts from 1969 through 1972. The most
Moon
1961–1972 American crewed lunar exploration program
the free-return option. After Apollo 12 placed the second of several seismometers on the Moon, the jettisoned LM ascent stages on Apollo 12 and later missions
Apollo_program
NASA robotic spacecraft sent to Mars
color picture of the surface of Mars (displayed below) was taken. The seismometer failed to uncage, and a sampler arm locking pin was stuck and took five
Viking_1
electronics module. The sensor unit contained three matched long-period (LP) seismometers aligned orthogonally in a triaxial set to measure one vertical and two
Apollo 14 Passive Seismic Experiment
Apollo_14_Passive_Seismic_Experiment
Panoramic photos taken during the Apollo 11 lunar mission
Buzz Removing Passive Seismometer - Taken by Neil Armstrong
Lunar Panoramic Photography - Apollo 11
Lunar_Panoramic_Photography_-_Apollo_11
NFL team in Seattle, Washington
Sandi; O'Neil, Danny (January 10, 2011). "Seahawks fans' frenzy felt by seismometer". The Seattle Times. Archived from the original on November 18, 2012
Seattle_Seahawks
Planned Chinese lunar exploration mission
include the following: Lander Landing Camera Topography Cameras Lunar Seismometer Lunar Low Frequency Electromagnetic Field Detector Lunar Regolith Heat
Chang'e_8
Physics of the Earth and its vicinity
oldest sciences, dating back to antiquity with the development of early seismometers and magnetic compasses, and later extending to Newtonian analyses of
Geophysics
sensor type. Acoustic radiometer Geophone Hydrophone Microphone Pickup Seismometer Sound locator Air flow meter Air–fuel ratio meter Blind spot monitor
List_of_sensors
Origin point beneath an air explosion
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Hypocenter
Type of mechanical arm with similar functions to a human arm
Animation of the InSight lander's seismometer being lifted off the saucer by its robotic arm and placed on the surface of Mars
Robotic_arm
Technologies whose capabilities can no longer be produced in their original form
Zhang's seismoscope, also known as hòufēng dìdòngyí, an ancient Chinese seismometer. Multiple modern recreations have been created, but it is debated whether
List_of_lost_inventions
Earthquake that occurs within the interior of a tectonic plate
come with detailed micro-seismic monitoring, involving dense arrays of seismometers. In this manner, very small earthquakes associated with a causative fault
Intraplate_earthquake
Discontinuous earthquake-like event
related tremor, which can be detected and approximately located using seismometer data filtered appropriately (typically in the 1–5 Hz band). That is,
Slow_earthquake
Shun of Han became emperor of the Han dynasty. 132 Zhang invented a seismometer capable of indicating the direction of earthquakes. Cai Yong was born
Timeline_of_Chinese_history
Prehistoric impact crater in Mexico
up to 2,470 kilometers (1,530 mi). This survey also used ocean bottom seismometers and land stations to allow 3D travel time inversion to improve the understanding
Chicxulub_crater
British astronomer (born 1951)
Leicester University, to develop and install tiltmeters and a recording seismometer on the active volcano Mount Etna He has presented research on ancient
Nigel_Henbest
Measure of earthquake size
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Moment_magnitude_scale
Cancelled NASA lander for Europa
Science, Construction, and Operations in Challenging Environments "Seismometer to Investigate Ice and Ocean Structure (SIIOS)" H Bailey, R Weber, D
Europa_Lander
Study of past and present water on Mars
suggested the presence of liquid water in subglacial lakes and in 2024, seismometer data suggested the presence of liquid water deep under the surface. Most
Water_on_Mars
Earthquake shaking
of the shaking involved in strong ground motion usually overwhelms a seismometer, forcing the use of accelerographs (or strong ground motion accelerometers)
Strong_ground_motion
Earthquake in Los Angeles, California
Pleistocene sediments and were previous landslides that became reactivated. A seismometer at the Cedar Hill Nursery in Tarzana observed the greatest horizontal
1994_Northridge_earthquake
plot displays vertical displacements of the Earth's surface recorded by seismometers from the IRIS/USGS Global Seismographic Network plotted with respect
2004 Indian Ocean earthquake and tsunami
2004_Indian_Ocean_earthquake_and_tsunami
5001 The team arrives to Los Angeles in order to place an underwater seismometer in the Malibu fault. Stephanie agrees to be their safety officer, because
List_of_Baywatch_episodes
1982 Soviet space probe which successfully landed on Venus
spectrometer, a screw drill and surface sampler, a dynamic penetrometer, and a seismometer to conduct investigations on the surface. The list of lander experiments
Venera_14
depth of the earthquake prompted scientists in South America to install seismometer networks focused on long-period earthquakes. Until the 1994 Bolivia earthquake
1970_Colombia_earthquake
earthquake observation network using their own custom-built short-period seismometers, the Richter scale, and the Modified Mercalli intensity scale (an updated
List of earthquakes in California
List_of_earthquakes_in_California
American astronaut (born 1930)
its condition before their flight. Aldrin and Armstrong then set up a seismometer, to detect moonquakes, and a laser beam reflector. While Armstrong inspected
Buzz_Aldrin
Soviet program that explored Venus with multiple probes
including cameras, a microphone, a drill and surface sampler, and a seismometer. They also had instruments to record electric discharges during its descent
Venera_program
transferred in full to Caltech. Requiring accessible bedrock on which to place seismometers, the Seismo Lab could not originally be located on the Caltech campus
Caltech Seismological Laboratory
Caltech_Seismological_Laboratory
Topics referred to by the same term
warning score Early warning system Earthquake warning system, a network of seismometers that detect an earthquake already in progress to provide notice of incoming
EWS
Deepest known point of Earth's seabed
2016, the CAS 3,300-ton research vessel Shiyan 3 deployed 33 broadband seismometers onto both the backarc northwest of the Challenger Deep, and onto the
Challenger_Deep
Branch of seismology
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Earthquake_forecasting
Device that measures proper acceleration
devices. Vibration in industrial machinery is monitored by accelerometers. Seismometers are sensitive accelerometers for monitoring ground movement such as earthquakes
Accelerometer
Sixth and most recent crewed Moon landing
and trip the seismometers left by prior Apollo crews. It struck the Moon just under 87 hours into the mission, triggering the seismometers from Apollo
Apollo_17
Type of elastic body wave
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
S_wave
Predicts density vs depth in Earth
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Adams–Williamson_equation
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Types_of_earthquake
Earthquake that occurs at the boundary between two tectonic plates
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Interplate_earthquake
Observatory in Dumfries and Galloway, Scotland
measurements. Shortly after 19:00 GMT on 21 December 1988, the observatory's seismometers recorded the ground impact of Pan Am Flight 103, which crashed into the
Eskdalemuir_Observatory
Volcano in Alaska, United States
advance warning." On 23 May 2022 the AVO announced that they had "placed a seismometer and GPS sensor on Kruzof Island to better monitor the Mount Edgecumbe
Mount_Edgecumbe_(Alaska)
Scales to describe earthquake strength
regional earthquakes, both powerful earthquakes that might drive the seismometer off-scale (a problem with the analog instruments formerly used) and preventing
Seismic_magnitude_scales
UK company developing an autonomous underwater vehicle
to develop an autonomous underwater vehicle (AUV) with ocean-bottom seismometer (OBS) sensors. Since 2014 the company has been a subsidiary of Thalassa
Autonomous_Robotics
System used to detect and warn the public about impending tsunamis
between Antofagasta and Arica. Each station was provided with broadband seismometer, accelerometer, GPS antenna. In four cases, it was installed a short-base
Tsunami_warning_system
Situation or object that can cause harm
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Hazard
Earthquake east of the Kuril Islands, Soviet Union
Kuril–Kamchatka Trench which based on pulses of shock registered on seismometer records, found to have contained three particular areas of asperity with
1963_Kuril_Islands_earthquake
Scientific instrument
earthquake ground motion is so strong that it causes the more sensitive seismometers to go off-scale. There is an entire science of strong ground motion,
Accelerograph
Fifth crewed Moon landing
previous Apollo landing sites would also be beneficial for the network of seismometers, deployed on each landing mission beginning with Apollo 12. At Alphonsus
Apollo_16
One hundred years, from 101 to 200
water-powered armillary sphere. 132: Zhang Heng of China invents first seismometer to detect the cardinal direction of earthquakes. Ptolemy compiles a catalogue
2nd_century
Topics referred to by the same term
Obstetrics and gynaecology, commonly abbreviated Obs/Gyn Ocean-bottom seismometer, a seismic tool to record earthquakes underwater Old Body Style, a colloquial
OBS
Proposed NASA space probe to Saturn's moon Enceladus
Spectrometer (BepiColombo) Context Imager Stereo Surface Imager (Phoenix) In Situ Suite Seismometer Seismic Experiment for Interior Structure (Insight)
Enceladus_Orbilander
Earthquake that occurs under a body of water, especially an ocean
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Submarine_earthquake
Archery equipment manufacturer
poles and baseball bats, and in 1969 produced the thermal shroud for the seismometer used in the Apollo 11 moon landing. After Doug's death in 1972, Jim became
Easton_Archery
Device that provides heat through radioactive decay
panels rather than RTGs to generate electricity. Examples include the seismometer deployed on the Moon by Apollo 11 in 1969, which contained 1.2 ounces
Radioisotope_heater_unit
Soviet space probe that landed on Venus in 1982
spectrometer, a screw drill and surface sampler, a dynamic penetrometer, and a seismometer to conduct investigations on the surface. The list of lander experiments
Venera_13
ancient artifacts. To better prepare for calamities, Zhang Heng invented a seismometer in 132 CE which provided instant alert to authorities in the capital
History_of_science
Committee in Japan
distance Hypocenter Shadow zone Seismic waves P wave S wave Measurement Seismometer Seismic magnitude scales Seismic intensity scales Prediction Coordinating
Coordinating Committee for Earthquake Prediction
Coordinating_Committee_for_Earthquake_Prediction
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SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
SEISMOMETER
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