A comparison between a downhole seismometer and a seismometer on the ocean floor

A comparison between a downhole seismometer and a seismometer on the ocean floor
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井下地震仪与海底地震仪的比较

DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
D. Hussong
D. Hussong
中科院分区：
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文献类型：
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作者：
J. Carter;F. Duennebier;D. Hussong

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本文比较了深海（5.5km）中井下地震计和附近（200m以内）海底地震计记录的信号和噪声特征。这两种仪器的绝对噪声水平和信噪比非常相似。我们将这种意想不到的相似性归因于井下仪器的浅就位深度（194米海底）和它被夹在其中的软沉积物。
Abstract We have compared the signal and noise characteristics recorded by a downhole seismometer and a nearby (within 200 m) ocean bottom seismometer in the deep ocean (5.5 km). Absolute noise levels and signal-to-noise ratios from the two instruments are remarkably similar. We attribute this unexpected similarity to the shallow emplacement depth of the downhole instrument (194 m subbottom) and the soft sediment into which it was clamped.