Preliminary Study of Methane Distribution in Sediments Jakarta Bay
Irfan Kampono*a,b, Nining Sari Ningsiha, Aditya R. Kartadikariaa, Yaya Ihya Ulumuddinb, Raden Sutiadib, Agus Dendi Rochendib, Fadjar Hidayatb, Hariyanto Triwibowob

aFaculty of Earth Sciences and Technology, Bandung Institute of Technologi (ITB),
Jl. Ganesha 10, Bandung, Jawa Barat 40132, Indonesia
bResearch Center for Oceanography-National Research and Innovation Agency (BRIN),
Jl. Pasir Putih 1, Ancol Pademangan, Jakarta 14430, Indonesia

Abstract

The role of methane (CH4) as a greenhouse gas source is often overlooked in favor of the dominant influence of carbon dioxide (CO2) on climate and the environment. However, methane in the atmosphere is more effective at absorbing heat than carbon dioxide. With the same mols, methane gas is 28 times more powerful at trapping heat in the atmosphere over a 100-year period. The shallow waters of large cities are a source of methane generation as these areas contribute greatly to changes in environmental loads due to human activities. With the world^s second longest coastline and expansive shallow waters, Indonesia has a major contribution as a source of methane distribution that impacts climate changes. The waters of Jakarta are a highly terrestrial. This can be observed from the spillage of industrial and domestic waste to 13 major river/estuaries that flow from West Java and Banten, through the Jakarta city area and run-off fron the mainland. The aims of this study are: (1) to identify the source of CH4 in sediments, (2) to map CH4 in Jakarta Bay. The results of the methane source and distribution seafloor sediments of Jakarta Bay can reveal data uncertainties in estimating emission from Indonesia^s oceans.

Keywords: Climate changes, Jakarta Bay, Methane, Sediment, Oceanic carbon

Topic: Marine Hazard, and Coastal Protection