This dataset contains preliminary impact assessments of the Hunga-Tonga-Hunga-Ha'apai volcanic eruption and induced tsunami in January 2022.
The eruptions sent a plume of ash, gas and steam 20 kilometers (12.4 miles) into the air. Satellite imagery showed a massive ash cloud and shockwaves spreading from the eruption. Ash was falling from the sky in the Tonga capital, Nuku'alofa, Saturday evening and phone connections were down. The eruption was likely the biggest recorded anywhere on the planet in more than 30 years, according to experts.
This publication intends to assist project designers, regulators and decision makers to anticipate and address all relevant public health, socio‐economic and environmental concerns that may arise when under‐ taking a desalination project, for obtaining maximum beneficial use of the desalinated water in terms of quality, safety and environmental protection.
Case study from Kiribati is linked at the bottom of this dataset
Damage assessment in Atata Island, Kolovao district, Tongatapu division, Tonga as of 18 January 2022
This map illustrates impact of the Hunga Tonga-hunga Ha'apai volcanic eruption and subsequent tsunami in the Atata island (Kolovao district, Tonga) and the related damage assessment as detected from a Pleiades image acquired on 18 January 2022.
Source : :United Nations Satellite Centre(UNOSAT)
This map illustrates effects of the Hunga Tonga-hunga Ha'apai volcanic eruption in Nomuka island (Mu'omu'a district, Tonga) and damage assessment as detected from a Pleiades image acquired on 17 January 2022.
250 structures identified. 104 structures were analyzed in the cloud-free area and 41 structures were identified as damaged and almost all the structures were covered with ash. This is a preliminary analysis and has not yet been validated in the field
The report describes Preliminary Satellite-Derived Damage Assessment Status for the Kingdom of Tonga - Affected structures and affected facilities observed in all island after tsunami triggered by volcanic eruption.
Source : UNOSTAT
This map illustrates effects of the Hunga-Tonga Hunga- Ha'apai volcanic eruption in Mango island and damage assessments as detected from a Kompsat-3 image acquired o 18 January 2022. UNOSTAT identified 26 structures as damaged and/or destroyed and 1 structure as potentially damaged. The entire island appears to be covered with ashes. This is a preliminary analysis and has not yet been validated in the field
This map illustrates the impact of the Hunga Tonga-hunga Ha'apai volcanic eruption and the subsequent tsunami in Fonoifua island located at 110 km NE of Nuku'alofa and also the building damage assessment as detected from a Pleaides image acquired on 20 January 2022.
Preliminary Satellite-Derived Damage Assessment as of 21st January 2022 for 'Eua Island.
Status:
This map identifies reefs that falls within each of the 3 Impact Zones
This map illustrates the impact of the Hunga Tonga-hunga Ha'apai volcanic eruption and the subsequent tsunami in 'Ohonoua town ('Eua Prope district, Tonga) and damage assessment as detected from Pleiades images acquired on 20 January 2022 at 11:20 local time and 21 January 2022 at 11:13 local time.
The map was produced by JRC.. Joint Research Centre of the EU. It provided a situation overview as at 18 & 19 Jan, 2022 Sources provided by UN OCHA. Sattelite mapping activation sources: Corpernicus, UNOSAT- UNITR, International Charter Activation 744.
This document also provide some infomation on the types of assistance that have been provided to the people as well as findings from the assessment.
The maps highlights areas with significant shift in the shoreline by overlaying shoreline data from Nov 2021 and January 2022
Concerns are raised over potential negative impacts of desalination activity on the environment.
Resource and Guidance Manual for Environmental Impact Assessments
Suggested Citation :
UNEP (2008) Desalination Resource and Guidance Manual for Environmental Impact Assessments. United Nations Environment Programme, Regional Office for West Asia, Manama, and World Health Organization, Regional Office for the Eastern Mediterranean, Cairo
This review was in preparation for Tonga's 4th national report to the CBD (Convention on Biological Diversity)
The Integrated Water and Coastal Management Plan for Vava'u acrhipelago in the Kingdom of Tonga has involved consultations with multi-level and multi-discipline stakeholder including local, provincial and national institutions, civil societies, private institutions and communities.
The Integrated Water and Coastal Management (IWCM) project was initiated in 2013 as a continuation of the very successful Integrated Water Resource Management Project in Vava'u from 2010-2012.
The deliverable focuses on a categorized listing of key issues and available information plus a concise description of the major characteristics of the Tongatapu coast (see Appendix B). The evidence to support the recommendations presented in this report has been gathered from a literature review, interviews with key stakeholders of Tongan government agencies and consideration of existing institutional practices of coastal management planning from the international arena (see Deliverable 2).
Rising oceans, changing lives: Final report is the overview report in a series of technical reports that have been
written for the project on Lifuka Island. Accordingly the section titles in the final report correspond with the
names of the respective technical reports.
This was an integrated effort by all concerned with the coastline in Tonga.