Tsunami also has the sub-groups : ITIC , CTIC , ICGPTWS , ICGPTWS-Officers (PTWS-O) , ICGPTWS-Steering Committee (PTWS-SC) , WG1-Understanding Tsunami Risk (PTWS-WG1-UTR) , WG2-Tsunami Detection Warning and Dissemination (PTWS-WG2-TDWD) , WG2-TT-Tsunami Service Providers (PTWS-WG2-TT-TSP) , WG2-TT-Integrated PTWS Sensor Networks for Tsunami Detection and Characterisation (PTWS-WG2-TT-ISN) , WG2-TT-Tsunami Forecasting from Ocean Observations (PTWS-WG2-TT-TFOO) , WG2-TT-Tsunami Generated by Volcanoes (PTWS-WG2-TT-TGV) , WG3-Disaster Risk Management and Preparedness (PTWS-WG3-DRMP) , WG3-TT-Tsunami Ready (PTWS-WG3-TT-TR) , Regional Working Group on Tsunami Warning and Mitigation System on the Central American Pacific Coast (PTWS-RWG-CAPC) , Regional Working Group on Tsunami Warning and Mitigation System in the Southeast Pacific Region (PTWS-RWG-SEP) , Regional Working Group on Tsunami Warning and Mitigation System in the South China Sea Region (PTWS-WG-SCS) , Regional Working Group on Tsunami Warning and Mitigation System in the South China Sea Region-TT-Capacity Development and Services (PTWS-WG-SCS-TT-CDS) , Pacific Island Countries and Territories Working Group on Tsunami Warning and Mitigation (PTWS-WG-PICT) , Pacific Island Countries and Territories Working Group on Tsunami Warning and Mitigation-TT-Capacity Development (PTWS-WG-TT-CD) , Pacific Island Countries and Territories Working Group on Tsunami Warning and Mitigation-TT-Information Sharing Platforms (PTWS-WG-PICT-TT-ISP) , Task Team on PacWave Exercices (PTWS-TT-PWE) , Pacific Island Countries and Territories Working Group on Tsunami Warning and Mitigation-TT-Seismic Data Sharing in the Southwest Pacific (PTWS-WG-PICT-SDSSWP) , ICG/CARIBE EWS , ICGCARIBE EWS Officers (CEWS-O) , WG1-Risk Knowledge (WG1-RN) , WG2-Tsunami Detection Analysis and Forecasting (CEWS-WG2-TDAF) , WG3-Tsunami Warning Dissemination and Communication (CEWS-WG3-TWDC) , WG4-Preparedness and Response Capabilities (CEWS-WG4-PRC) , WG4-Preparedness and Response Capabilities-Preparedness and Response capabilities(CEWS-WG4-PRC-PRC) , WG4-Preparedness and Response Capabilities-Mitigation (CEWS-WG4-PRC-M) , WG4-Preparedness and Response Capabilities-Tsunami Ready (CEWS-WG4-PRC-TR) , TT-CARIBE WAVE (CEWS-TT-CW) , ICG/NEAMTWS , ICG/NEAMTWS Steering Committee , Working Group 3 , ICG/NEAMTWS Invited Observers , Sessional Working Group on a Multi-Hazard Approach , Task Team on the Communication Test and Tsunami Exercises , COPY Permanent Delegations , Working Group 4 , Working Group 2 , Working Group 1 , ICG/NEAMTWS COPY Permanent Delegations , Other ICG/ NEAMTWS Contacts , NEAMTWS GLOSS , Task Team on the Regional Tsunami Warning System Architecture , tsunami test , NEAMTWS Secretariat , NEAMTWS Task Team , Member States , NEAMTWS CTE2 , NEAM potential RTWCs , ICG/IOTWMS , Trainers , Tsunami Hazard Assessment and Modeling Training , Standard Operating Procedures Training , IOC Tsunami website administrators , ICG Participants .