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parturition    
n. 分娩,生产

分娩,生产

parturition
n 1: the process of giving birth [synonym: {parturition}, {birth},
{giving birth}, {birthing}]

Parturition \Par`tu*ri"tion\, n. [L. parturitio, fr. parturire:
cf. F. parturition. See {Parturient}.]
1. The act of bringing forth, or being delivered of, young;
the act of giving birth; delivery; childbirth.
[1913 Webster]

2. That which is brought forth; a birth. [Obs.]
[1913 Webster]


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  • Earthquake Waves: P-Waves, S-Waves, and Surface Waves Explained
    Surface waves travel slower than body waves but carry larger amplitudes and longer durations, which is why they are responsible for most earthquake destruction, particularly to buildings and infrastructure
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    Surface waves are seismic waves that travel along the Earth's surface, primarily generated by earthquakes, and are responsible for significant ground shaking
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    Surface waves are the most prominent phases recorded at teleseismic distances at periods longer than 30 s, especially from shallow-focus earthquakes Two types of surface waves are observed, distinguished by their polarization during propagation through the Earth: Love (SH) and Rayleigh (P–SV) waves, recorded on the transverse and vertical
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    They arrive after the faster P-waves and S-waves because they travel at slower velocities, but their energy is concentrated near the surface, leading to significantly larger amplitudes Surface waves also dissipate energy more slowly with distance than body waves, allowing them to sustain their size over longer travel paths
  • What Is a Surface Wave: Definition and Types - ScienceInsights
    Surface waves travel along boundaries between mediums, shaping ocean swells, earthquake damage, and wireless signals in ways that affect everyday life
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    By analyzing the behavior of these waves, geologists and seismologists can infer the composition, density, and structure of the Earth beneath the surface This article explores the types of earthquake waves, their propagation, and the methods used to measure them
  • Surface Waves - Michigan Technological University
    Surface waves travel more slowly through Earth material at the planet’s surface and are predominantly lower frequency than body waves They are easily distinguished on a seismogram Shallow earthquakes produce stronger surface waves; the strength of the surface waves are reduced in deeper earthquakes Surface waves arrive after the body waves
  • Seismic wave - Wikipedia
    Surface waves decay more slowly with distance than body waves which travel in three dimensions Particle motion of surface waves is larger than that of body waves, so surface waves tend to cause more damage
  • Earthquake - Seismic Waves, Properties, Geology | Britannica
    Attenuation of the waves in rock imposes high-frequency limits, and in small to moderate earthquakes the dominant frequencies extend in surface waves from about 1 to 0 1 hertz
  • Surface Waves Explained: US Examples How They Impact You!
    Surface Waves: These waves are confined to traveling along the surface of the Earth They are generated by the interaction of P-waves and S-waves with the planet's surface and are the primary reason we feel the ground shake





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