海洋地震仪OBS简介及技术参数中英文

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海洋地震仪OBS简介

Ocean Bottom Seismometer

主要用途

海底地震仪OBS( Ocean Bottom Seismometer )是一种放置于海底的地震数据采集系统,可用于记录天然地震事件和人工地震勘探,广泛应用于油气勘探、地球深部结构探测等领域。由于仪器位于海底,可以同时接收P波和s波信号,且环境噪音低,实现高信噪比、高分辨率和高精度的海底地震数据采集。Application :

OBS( Ocean Bottom Seismometer)is a seismic data acquisition system which placed in the seabed, able to record the natural earthquake and human seismic exploration, it is widely used for Oil & gas exploration, deep exploration of earth structure and other fields. Since the device is in the seabed, it could receive the signal of P wave and S wave at the same time, with a low noise environment, the data acquisition is realized the high signal to noise ratio, high resolution and high accuracy.

主要特点

1 •可采集4分量的地震信号,分辨率高,一致性好;

2.采用宽频带地震计,可适应海底较大的倾斜角,自动调整水平;

3.低功耗运行,连续长期海下工作;

4.万米级工作水深;

5.高精度GPS授时,水面自定位;

6.人机友好交互,方便查看仪器状态;

Main Features:

1.Get 4 channels seismic signal, high resolution and Good consistency

2.Adopt broad band seismic sensor, can adapt to the larger angle of the sea,

automatically adjust the level;

3.Low-power operation, continuously work underwater in Iong-terms;

4.work depth could reach 10000m;

5.High precision GPS timing, self-positioning;

6.Man-machine friendly interaction,easy to view the instrument state;技术参数

1.宽频带长周期四通道海底地震仪:甚宽频带(120s-50Hz ):标准宽频带(60s-50Hz ;30s-

100Hz );部分120s和60s OBS为双球体或四球体等‘以满足检波器固置空间和海底能源供应的需

仪器尺寸:舱球600X 600 X 700 mm;投放尺寸:含沉耦架900 X 900X 1000 mm;

耐压水深:6000 m、9000 m、12000m三种规格;通道数:四通道(3分量速度检波器,1通道水听器) 连续工作时长:10- 15个月;最大回收周期:24个月;

检波器频带:60 s ~ 50 Hz,电容换能地震计;

可选120 s、60 s和30 s ~ 50Hz任意带宽;

地震计功耗:0.15w ;水听器频带:0.1 Hz ~ 20k Hz ;动

态范围:>120 dB ;整机功耗:0.25 w ;采样率:250,

100,50 sps ;内置高精度时钟:OCXO, 0.01 PPM@C;

自储存容量:32GB;

仪器状态设置:Wifi接口;地震数据传输:USB2.0标准;

仪器重量:65 kg (不含沉耦架);

沉耦架重量:25kg ;

1、Broad Band Frequency Long Period Four Channel

OBS

Broad Ba nd Freque ncy(120s-50Hz):

Standard Frequency(60s-50Hz ; 30s-100Hz);

part of 120s and 60s OBS is double ball or four ball structure to meet the dema nd of the in built geopho ne space and sea power.

OBS Size: 600 X00 >700 mm ;

Sink size with dead weight: 900 X900 X000 mm ;

Operating depth(Max) : 6000 m、9000 m、12000m three types ;

Charm els : Four(3 aixs geopho ne , 1 cha rmel hydroph one);

Worki ng time : 10 ~ 15 mon ths ; Max recycling time : 24 month ;

Geoph on e freque ncy: 60 s~ 50 Hz, Capacitive e nergy seismometer ;

120 s ' 60 s & 30 s ~ 50Hz is optional ;

Geoph on e power consumpti on: 0.15 w ;

Hydroph one freque ncy : 0.1 Hz ~ 20k Hz ;Dynamic range : >120 dB ;

Overall Power Consumption : 0.25 w :

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