Japan\u27s East China Sea Ocean Boundaries: What Solutions Can a Confused Legal Environment Provide in a Complex Boundary Dispute?

This Note addresses the ocean boundary delimitation conflict between Japan, China, Taiwan, and South Korea in the East China Sea. The author considers international law on boundary delimitation and concludes that the law is unclear on delimitations between states within four hundred nautical miles of one another. The International Court of Justice has held that equity is the norm to be applied to boundary delimitation disputes but it has not resolved the competition between the natural prolongation theory of delimitation and a theory based upon the Exclusive Economic Zone. The geology of the East China Sea brings this issue to the fore. The author concludes that regardless of how this conflict is resolved, equidistance, proportionality, and other equitable concerns will apply to any boundary delimitation. The Note accounts for the political situation in the East China Sea area and concludes that the possibility of reaching a solution is greater than it has been in the past. The author nevertheless argues that it will be necessary to look to alternatives to existing legal precedents to develop a solution to the dispute in the East China Sea. These alternatives include the creation of joint development zones, a compromise of the best legal position advanced by each side and an approach based on strict proportionality

Cosmological Information from Lensed CMB Power Spectra

Gravitational lensing distorts the cosmic microwave background (CMB) temperature and polarization fields and encodes valuable information on distances and growth rates at intermediate redshifts into the lensed power spectra. The non-Gaussian bandpower covariance induced by the lenses is negligible to l=2000 for all but the B polarization field where it increases the net variance by up to a factor of 10 and favors an observing strategy with 3 times more area than if it were Gaussian. To quantify the cosmological information, we introduce two lensing observables, characterizing nearly all of the information, which simplify the study of non-Gaussian impact, parameter degeneracies, dark energy models, and complementarity with other cosmological probes. Information on the intermediate redshift parameters rapidly becomes limited by constraints on the cold dark matter density and initial amplitude of fluctuations as observations improve. Extraction of this information requires deep polarization measurements on only 5-10% of the sky, and can improve Planck lensing constraints by a factor of ~2-3 on any one of the parameters w_0, w_a, Omega_K, sum(m_nu) with the others fixed. Sensitivity to the curvature and neutrino mass are the highest due to the high redshift weight of CMB lensing but degeneracies between the parameters must be broken externally.Comment: 19 pages, 16 figures, submitted to PR