| 摘要 |
A housing for a seismic sensing element ( 3 ) for use on the earth's surface comprises connecting means ( 5 ) for connecting the housing ( 3 ) to a support cable ( 2 ) so as to allow relative movement between the sensor housing ( 3 ) and the cable ( 2 ). This de-couples the sensor housing from the support cable, and improves the fidelity of the sensor. The connecting means ( 5 ) preferably comprises resilient connecting elements, to prevent the transmission of vibrations between the support cable and the sensor housing. The sensor housing ( 3 ) preferably has a flat base ( 1 ), so that there is good coupling between the sensor housing and the earth. Alternatively, the sensor housing can be fitted with a base member (( 24 a, 24 b, 24 c) that has at least one flat face ( 26, 26 a, 26 b, 26 c).
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