论文标题
同步建模，垂直运动速率变化和大溪地火山岛上的前线滑坡的潜在检测
Isostatic Modelling, Vertical Motion Rate Variation and Potential Detection of Past-Landslide in the Volcanic Island of Tahiti
论文作者
论文摘要
板内火山岛通常被视为稳定的浮雕，并持续垂直运动，并用于相对海平面曲线重建。这项研究表明，大型滑坡会引起不可忽略的等静压调整。使用建模方法对滑坡后发生的垂直运动进行量化。我们表明，巨大的滑坡在大溪地的弹性厚度为15 km <$ t_e $ <20公里。理论案例还表明，沿海运动的沿海运动涉及0.2 $ km^3 $的流离失所，并影响相对海平面的重建。在大溪地中，在最后6公里期间发生0.1 mm/yr的沉降率（从0.25 mm/yr到0.15 mm/yr）发生，可以通过涉及0.2 $ km^3 $的最小体积的地板来解释，$ 6 \ pm 1 $ pm 1 $ $ kyr ogo。
Intraplate volcanic islands are often considered as stable relief with constant vertical motion and used for relative sea-level curves reconstruction. This study shows that large landslides cause non-negligible isostatic adjustment. The vertical motion that occurred after landslide is quantified using a modelling approach. We show that a giant landslide caused a coastline uplift of 80-110 m for an elastic thickness of 15 km < $T_e$ < 20 km in Tahiti. Theoretical cases also reveal that a coastal motion of 1 m occurred for a landslide involving a displaced volume of 0.2 $km^3$ and influence relative sea-level reconstruction. In Tahiti, a change in the subsidence rate of 0.1 mm/yr (from 0.25 mm/yr to 0.15 mm/yr) occurred during the last 6 kyr and could be explained by a landslide involving a minimum volume of 0.2 $km^3$, $6 \pm 1$ kyr ago.
