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Article
Microearthquake reveals the lithospheric structure at mid-ocean ridges and oceanic transform faults
Mid-ocean ridge and oceanic transforms are among the most prominent features on the seafloor surface and are crucial for understanding seafloor spreading and plate tectonic dynamics, but the deep structure of ...
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Article
Preliminary Results of the Seismicity Monitoring Experiment around the 2019 Mw5.4 Earthquake Epicenter in the Central South China Sea Basin
On September 5, 2019, a moderate earthquake of Mw5.4 unexpectedly occurred in the apparently quiescent central basin of the South China Sea. We immediately carried out a seismicity monitoring experiment around...
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Article
Open AccessRunup of landslide-generated tsunamis controlled by paleogeography and sea-level change
Pre-Holocene landslides and tsunami deposits are commonly observed on continental margins and oceanic islands. However, scarce evidence has thus far linked pre-historic submarine landslides to particular tsuna...
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Article
Cenozoic Propagated Rifting in the Dangerous Grounds in Response to the Episodic Seafloor Spreading of the South China Sea
The southern continental margin of the South China Sea has documented multiphase continental rifting corresponding to the propagation of seafloor spreading. Here we investigate three multi-channel seismic refl...
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Article
Oceanic crustal structure and tectonic origin of the southern Kyushu-Palau Ridge in the Philippine Sea
A new high-resolution velocity model of the southern Kyushu-Palau Ridge (KPR) was derived from an active-source wide-angle seismic reflection/refraction profile. The result shows that the KPR crust can be divi...
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Article
Crustal structure and variation along the southern part of the Kyushu-Palau Ridge
As an interoceanic arc, the Kyushu-Palau Ridge (KPR) is an exceptional place to study the subduction process and related magmatism through its interior velocity structure. However, the crustal structure and it...
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Article
The crustal nature of the northern Mozambique Ridge, Southwest Indian Ocean
The Mozambique Ridge (MOZR) is one of the basement high structures located in the Southwest Indian Ocean, parallel to the Southeast African continental margin. It was formed as a result of the tectono-magmatic...
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Article
Open AccessIsolation of the South China Sea from the North Pacific Subtropical Gyre since the latest Miocene due to formation of the Luzon Strait
The North Pacific subtropical gyre (NPSG) plays a major role in present global ocean circulation. At times, the gyre has coursed through the South China Sea, but its role in the evolutionary development of tha...
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Article
The architecture of the lower parts of submarine canyons on the western Nigerian continental margin
Multi-beam, sub-bottom and multichannel seismic data acquired from the western Nigerian continental margin are analysed and interpreted to examine the architectural characteristics of the lower parts of the su...
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Article
Open AccessA new method to identify the foot of continental slope based on an integrated profile analysis
A new method is proposed to identify automatically the foot of the continental slope (FOS) based on the integrated analysis of topographic profiles. Based on the extremum points of the second derivative and th...
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Article
Crustal structure and mantle transition zone thickness beneath a hydrothermal vent at the ultra-slow spreading Southwest Indian Ridge (49°39′E): a supplementary study based on passive seismic receiver functions
As a supplementary study, we used passive seismic data recorded by one ocean bottom seismometer (OBS) station (49°41.8′E) close to a hydrothermal vent (49°39′E) at the Southwest Indian Ridge to invert the crus...
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Article
S-wave velocity structure and tectonic implications of the northwestern sub-basin and Macclesfield of the South China Sea
Based on the optimum P-wave model, the S-wave velocity structure of a wide angle seismic profile (OBS2006-1), across the northwestern sub-basin (NWSB) and the Macclesfield, is simulated by a 2-D ray-tracing metho...
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Article
Open AccessPreface: Magmatic and Tectonic Process, Seabed Resource from the mid-ocean ridge to continental margin
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Article
Crustal structure of the Southwest Subbasin, South China Sea, from wide-angle seismic tomography and seismic reflection imaging
The Southwest Subbasin (SWSB) is an abyssal subbasin in the South China Sea (SCS), with many debates on its neotectonic process and crustal structure. Using two-dimensional seismic tomography in the SWSB, we d...
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Article
Open AccessOligocene–Miocene carbonates in the Reed Bank area, South China Sea, and their tectono-sedimentary evolution
We have analyzed two recently acquired multi-channel seismic profiles across the Reed Bank area, South China Sea. A detailed seismic interpretation coupled with drilling data has proved the occurrence of a wid...
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Article
Distribution, features, and influence factors of the submarine topographic boundaries of the Okinawa Trough
Based on multiple types of data, the topographical features of the Okinawa Trough (OT) have been characterized and a computation method has been proposed to determine the break point of continental shelf (BOS)...
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Article
Tectonic contrast between the conjugate margins of the South China Sea and the implication for the differential extensional model
The extensional model of the South China Sea (SCS) has been widely studied, but remains under debate. Based on the latest high-quality multi-channel seismic data, bathymetric data, and other obtained seismic p...
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Article
Methods and procedures to determine the outer limits of the continental shelf beyond 200 nautical miles
This paper establishes techniques and methods to determine a variety of boundaries associated with 200 nautical miles beyond the continental shelf. The methods, based on topography, slope and second-derivative...
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Article
The morphotectonics and its evolutionary dynamics of the central Southwest Indian Ridge (49° to 51°E)
The morphotectonic features and their evolution of the central Southwest Indian Ridge (SWIR) are discussed on the base of the high-resolution full-coverage bathymetric data on the ridge between 49°-51°E. A com...
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Article
Distribution of large-scale detachment faults on mid-ocean ridges in relation to spreading rates
Large-scale detachment faults on mid-ocean ridges (MORs) provide a window into the deeper earth. They have megamullion on their corrugated surfaces, with exposed lower crustal and upper mantle rocks, relativel...
