本文選題：海底熱流 + 地溫梯度�。� 參考：《熱帶海洋學(xué)報(bào)》2016年04期

【摘要】：南海和印度洋共87個(gè)海底熱流測(cè)量站位的探針偏角分布表明:海底熱流測(cè)量過程中,探針插入海底沉積物后通常都存在偏角,其偏角在0°~10°的占48.3%,10°~20°的占20.7%,20°~30°的占2.3%,30°~40°的占2.3%,超過40°的占26.3%。當(dāng)用探針偏角較大時(shí),必然會(huì)給地?zé)釁?shù)計(jì)算帶來不容忽視的相對(duì)誤差。因此,文章建立探針偏角與地溫梯度和熱流相對(duì)誤差之間的定量關(guān)系式,并據(jù)此計(jì)算得知:探針偏角10°時(shí),對(duì)地?zé)釁?shù)測(cè)量影響不大,其相對(duì)誤差只在2.0%以內(nèi);而當(dāng)探針偏角增大到15°~20°時(shí),地?zé)釁?shù)相對(duì)誤差則增大到5.0%左右,且隨著探針偏角逐漸增大,引起的相對(duì)誤差呈非線性迅速增大。因此,建議今后進(jìn)行海底熱流測(cè)量過程中,盡可能獲取探針插入海底沉積物時(shí)的偏角,進(jìn)而可對(duì)地溫梯度和熱流進(jìn)行偏角校正,獲得更為準(zhǔn)確的地?zé)釁?shù)。
[Abstract]:The angle distribution of the probe at 87 stations in the South China Sea and the Indian Ocean shows that in the process of submarine heat flow measurement, the probe usually has an angle after it is inserted into the sediment of the sea floor. The angle of deviation was 48.3 擄/ 10 擄and 20.7% (20 擄/ 20 擄) at 0 擄/ 10 擄and 20 擄/ 30 擄/ 20 擄/ 20 擄, respectively. The ratio of 20 擄to 30 擄/ 30 擄/ 40 擄was 2.3cm, and that of more than 40 擄was 26.3 擄/ 26.3 respectively. When the deflection angle of the probe is large, the relative error can not be ignored in the calculation of geothermal parameters. Therefore, the quantitative relationship between the probe deflection angle and the relative errors of the geothermal gradient and heat flux is established, and the results show that the relative error is only within 2.0% when the probe deviation angle is 10 擄. However, when the probe angle increases to 15 擄~ 20 擄, the relative error of geothermal parameters increases to about 5.0%, and the relative error increases rapidly with the increase of probe deflection angle. Therefore, it is suggested that in the process of submarine heat flux measurement in the future, the deflection angle of the probe inserted into the seabed sediment should be obtained as far as possible, and then the deviation angle of the geothermal gradient and heat flux can be corrected, and more accurate geothermal parameters can be obtained.
【作者單位】： 國(guó)土資源部海底礦產(chǎn)資源重點(diǎn)實(shí)驗(yàn)室廣州海洋地質(zhì)調(diào)查局;中國(guó)科學(xué)院邊緣海地質(zhì)重點(diǎn)實(shí)驗(yàn)室南海海洋研究所;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41106086、41474065) 國(guó)土資源部海底礦產(chǎn)資源重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(KLMMR-2013-A-10) 中國(guó)科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(xiàng)子課題(XDA11040303);中國(guó)科學(xué)院科研裝備研制項(xiàng)目(YZ201136);中國(guó)科學(xué)院知識(shí)創(chuàng)新工程青年人才領(lǐng)域前沿項(xiàng)目(SQ201007);中國(guó)科學(xué)院邊緣海地質(zhì)重點(diǎn)實(shí)驗(yàn)室基金項(xiàng)目(MSGL09-08、MSGL12-08) 中國(guó)地質(zhì)調(diào)查局項(xiàng)目(GZH201400202、1212010611302) 國(guó)家高技術(shù)研究發(fā)展計(jì)劃(“863”計(jì)劃)項(xiàng)目(2009AA09A201-05)~~
【分類號(hào)】：P714

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