The Mechanisms of Sea-Level Change

Sea level rise due to global warming is widely worried now as strategies are being implemented to deal with these problems. In this paper, we propose to examine the change mechanism of the past and present sea level and the influence of it on the coastal topography. Before explaining the cause of the sea level change, it is important to define various types of sea level change.

Changes in sea level are driven by various mechanisms that function at different spatial and temporal scales (for review see Kopp et al., 20153). The rise in GMSL is mainly caused by two factors: 1) an increase in seawater volume due to the spread of oceanic heat, 2) increase in ocean water caused by melting of the sea glacier and the ice sheets of Antarctica and Greenland 4 The change in the global precipitation pattern such as the change in the reservoir volume of the dam and reservoir, the amount of groundwater outflow, the change in the drainage volume of the Utsumi and wetlands, and the El Nino - Southern Oscillation (ENSO) period, The effect of change is small. Appearance of 4, 5, 6, 7, 8

The average sea level is rising. Sea level rise is a worldwide average sea level change induced by global sea level change. Relative sea level rise occurs where sea level rises against local land flow. The climate modeler focuses on estimating sea level changes. It will influence researchers to focus on relative sea level changes. Sensitivity is whether the system is affected by climate-related stimuli, whether harmful or beneficial. Impacts are direct (eg change in crop yield due to mean value, range, or temperature change) or indirect (eg damage due to coastal flood frequency increase due to sea level). To rise. See also climate sensitivity.

Understanding past and past sea level is important to analyze current and future changes. In the recent geological past, thermal expansion caused by land ice and temperature changes was the main cause of sea level rise. The sea level was at least 5 meters (16 feet) higher than the present time at the last time the earth was 2 ° C above the temperature before the previous industrialization. This was during the last interglacial period where global warming was caused by a slow change in orbital enforcement. Climate warming has been going on for thousands of years, and the scale of sea level rise means a big contribution from Antarctica and Greenland ice sheets. : 1139