Tonga in Google Maps SATELLITE IMAGERY Tonga Satellite Map The terrain of Tonga is a mix of low-lying coral islands interspersed with active and extinct volcanoes. For example, its major volcanoes include Tafahi, Late, and Tofua. Additionally, Lateiki Island, also known as Metis Shoal, is a...
Earth observation from satellites captured the build-up and consequences of the Hunga Tonga–Hunga Ha’apai eruption and explosion, as it affected the atmosphere23, ocean, that is, sea-surface discoloration or thermal anomalies, and the island morphological changes31,32. To map the rapid evolution...
The spatial heterogeneity of variables such as building and population density is thus much more accurate than in the case of choropleth maps, in which information is uniformly averaged across map units. The motivation to use the dasymetric mapping methodology, detailed below in several steps and ...
25Citations 50Altmetric Metrics Abstract Satellite-based Earth observation plays a key role for monitoring volcanoes, especially those which are located in remote areas and which very often are not observed by a terrestrial monitoring network. In our study we jointly analyzed data from thermal (Moder...
Map of the region influenced by the 2022 Hunga Tonga-Hunga Ha’apai (HTHH) eruption. (A) Very low-frequency/low-frequency (VLF/LF) transmitter signals, atmospheric electric field, ground-based magnetic field, and atmospheric pressure data. Brown star indicates the HTHH volcano; blue triangles ...
Furthermore, the 2022 Hunga Tonga volcanic eruption’s effects in the atmosphere were also captured clearly in ATMS observation minus the radiative transfer model simulation (O-B) bias global map, particularly at middle to upper-level channels. To generate the model simulated radiance, the European...