Group items tagged

Départ de la 25ᵉ flottille d'escorte anti-piraterie.

Chinese navy ships to be deployed at Gwadar: Pak navy official.

China building third aircraft carrier to stregthen south China Sea presence.

U.S. plans 10-month warship deployment to Singapore.

L'océan Indien sera-t-il chinois ?

Even as Japan remains divided over proposed changes in the role it should play in regional security issues, senior U.S. and Japanese military officers say they hope the Japanese navy may soon be freed up to play a more active role in the Pacific and beyond, plying some of the world's most hotly contested waters.

Even as Japan remains divided over proposed changes in the role it should play in regional security issues, senior U.S. and Japanese military officers say they hope the Japanese navy may soon be freed up to play a more active role in the Pacific and beyond, plying some of the world's most hotly contested waters.

Why Kenya must take control of sand harvesting off its coast.

China's new manned submersible finished the first ocean expedition of its operation stage, according to Science and Technology Daily.

Who Will Win the Great China-India Naval War of 2020?

Japan Is Becoming Player in South China Sea Sovereignty Dispute.

The Growing Significance of the Andaman and Nicobar Islands.

The generation and propagation of internal tides in the Andaman Sea are investigated using a three-dimensional high-resolution numerical model. Three categories of experiments, including driving the model with four main semidiurnal tides (M2, S2, N2, and K2), four main diurnal tides (K1, O1, P1, and Q1), and eight main tides (M2, S2, N2, K2, K1, O1, P1, and Q1), are designed to examine the effects of barotropic tides. The results show that the semidiurnal internal tides are dominant in the Andaman Sea, and the inclusion of diurnal barotropic tides negligibly modulates this result. That is partly due to the strength of the diurnal barotropic tides is generally one order smaller than that of the semidiurnal barotropic tides in this region. The sensitivity experiments put this on a firmer footing. In terms of the internal tidal energy, the experiments driven by the diurnal barotropic tides are three orders and one order smaller than those driven by the semidiurnal barotropic tides, respectively, during the spring and neap tides. In addition, the experiments result in total barotropic-to-baroclinic energy conversion rates over the Andaman Sea 29.15 GW (driven by the eight tides), 29.24 GW (driven by the four semidiurnal tides), and 0.05 GW (driven by the fourdiurnal tides) in the spring tidal period and 3.08 GW, 2.56 GW, and 0.31 GW in the neap tidal period, respectively. Four potential generation regions of internal tides are found, three of which are in the Andaman and Nicobar Islands and one in the northeastern Andaman Sea.

Aluminum and manganese are both key parameters in the GEOTRACES program. Data on dissolved aluminum (dAl) and dissolved manganese (dMn) relative to their geochemical behavior remain limited in the northeastern Indian Ocean (IO; including the Bay of Bengal (BoB) and equatorial Indian Ocean (Eq. IO)). Seawater samples collected in the BoB and Eq. IO during the spring inter-monsoon period (7 March to 9 April) of 2017 were analyzed to investigate the behavior and main processes controlling the distributions of dAl and dMn in the northeastern IO. The average concentrations of dAl and dMn in the mixed layer of the BoB were 16.6 and 6.7 nM, respectively. A modified 1-D box-model equation was utilized to estimate the contributions of different sources to dAl and dMn in the mixed layer. Al released from the desorption of and/or dissolution of the lithogenic sediments discharged by the Ganga-Brahmaputra (G-B) river system predominantly controlled the dAl distributions in the mixed layer of the BoB, while the desorption from the lithogenic sediments only contributed approximately 13%-21% dMn. Additional dMn input from the advection of Andaman Sea water and photo-reduction-dissolution of particulate Mn(IV) contributed more than 60% dMn in the mixed layer of the BoB. dAl and dMn in the surface mixed layer of the Eq. IO were mainly affected by the mixing of dAl- and dMn-enriched BoB surface water and low-dAl, low-dMn southern Arabian Sea surface water. Considering water mass properties and dAl concentrations, the distributions of dAl in the intermediate water (750-1,500 m) of northeastern IO were controlled by the mixing of Red Sea Intermediate Water, Indonesian Intermediate Water, and intermediate water of the BoB. Different from dAl, the apparent oxygen utilization relationship with dMn concentrations indicated that the regeneration of lithogenic particles under hypoxic conditions played a more important role than the remineralization of settling organic particles in co

After Fighting Over Mountains, India and China Lock Horns in the Indian Ocean.

Search for MH370 likely to end by August.

Search for MH370 likely to end by August.

The potential to better observe the weather and climate over the Indian Ocean has received a major boost with the arrival this week of EUMETSAT's Meteosat-8 satellite in its new position of 41.5°E.

The potential to better observe the weather and climate over the Indian Ocean has received a major boost with the arrival this week of EUMETSAT's Meteosat-8 satellite in its new position of 41.5°E.