帝汶海槽位于东南亚班达海与澳大利亚西北帝汶海之间的外班达岛弧，新近纪以来特别是晚中新世—晚上新世期间澳大利亚板块与班达岛弧的碰撞引发了帝汶岛的隆升和帝汶海槽的变形，影响了区域内的构造活动。澳大利亚西北大陆架边缘正断层主要控制了台地、地垒和地堑构造，帝汶海槽北部在弧—陆碰撞引发的帝汶岛隆升与海槽沉降双重作用下形成一系列逆冲和褶皱，海槽底部NE-SW向逆冲断层为海槽变形前锋，控制了海槽形态。构造特征与天然地震特征表明，澳大利亚板块与班达岛弧之间的班达俯冲带位于帝汶岛与内班达岛弧之间的翁拜海峡，以平均约62°的高角度俯冲，俯冲深度超过600 km，深部震源与上部震源之间存在明显的地震带间断，澳大利亚板块向东南亚板块下方的俯冲已逐渐减缓趋于停止，但由弧—陆碰撞引发的帝汶海槽与帝汶岛变形仍在持续，内班达岛弧正在沿班达海发生变形。在俯冲作用相对平衡的背景下，澳大利亚板块向东南亚板块下方的俯冲可能会转变为造山作用，未来内班达岛弧可能会隆升形成内、外班达岛弧双重造山带。

The Timor Trough is located at the boundary of the Eurasian and the Australian plates， in the outer Banda Arc between the Banda Sea in Southeast Asia and the Timor Sea in northwest Australia. Since the Neogene， especially from the Late Miocene to the Late Pliocene， the collision between the Australian continent and the Banda Arc caused the uplift of Timor Island and the deformation of the Timor Trough， which affected the regional tectonic activities. A series of normal faults developed at the margin of the Australian Northwest shelf， which mainly controls the platform， horst， and graben features. The northern Timor Trough formed a series of thrust faults under the dual effect of the uplift of Timor Island and subsidence of the Timor Trough caused by arc continental collision. The NE-SW thrust fault at the bottom of the Timor Trough is the deformation front that controls the shape of the trough. The characteristics of tectonics and earthquakes indicate that the Banda subduction zone between the Australian Plate and Banda Arc is located in the Ombai Strait， which is between Timor Island and the inner Banda Arc， subducting at an average high angle of approximately 62° at a depth of more than 600 km. The subduction angle in the south is larger than that in the north， which is related to the compression of the Indian Ocean subduction plate. The front oceanic crust subducted below the northwest Banda Sea showed a horizontal trend below 500 km. There is an obvious discontinuity in the earthquakes between the deep and upper focus zones. The subduction of the Australian Plate beneath the Southeast Asian Plate may have gradually slowed down and stopped； however， the deformation of Timor Island and the Timor Trough caused by arc continental collision continues. The inner Banda Arc is deforming along the Banda Sea. Under the background of relatively balanced subduction， the subduction of the Australian Plate beneath the Southeast Asian Plate may have transformed into an orogeny. In the future， the inner Banda Arc may be uplifted to form an inner and outer Banda Arc double orogenic belt.