National Observatory of Athens (Institute of Geodynamics)

Hellenic National Tsunami Warning Center CTSP in NEAMTWS

Workshop on Tsunami Decision Support System Ispra, Italy, 2-3 July 2015

Subscribers for receiving TWMs Greek General Secretary for Civil Protection

Earthquake Planning and Protection Organization

Operational since August 2012

17 Agencies from 12 Member Sates Plus 3 International bodies (IOC/UNESCO, ERCC-EU, JRC)

Standard Operational Procedures 24/7

Earthquake detection

Message dissemination for tsunamigenic events

Data analysis: earthquake & sea level

Tsunami detection (or not) tide gauges

Continuous monitoring of the various networks

SeisComP 3

On line Reporting to: GSCP, EMSC-CSEM, JRC/IPSC

Waveform Data Exchange on-line with: GFZ, INGV, ORFEUS, IRIS, CGS

Early-est

Coordination of all real time seismic networks in Greece by NOA-IG is currently comprising of more than 145 broadband seismic stations available in real time.

Networks operated by NOA

A developing accelerometric network comprising of over 150 stations, 80 of which are available in real time (yellow). The upgrade of the current seismic network with the co-located deployment of accelerographs is in development.

Networks operated by NOA

A GPS network of 20 continuous stations with data to rapidly detect uplift and subsidence is expansion combining existing CGPS stations operating off line for research purposes real time operation and link to the HL-NTWC.

Networks operated by NOA

A tide-gauge network of 12 stations is already available in real time to NOA-HLNTWC.

Networks operated by NOA

Three tide gauge stations have been installed in June 2013 in Koroni, Kihtira, Paleochora and are operated in cooperation with JRC. Data from those stations are available to NOA-HLNTWC and JRC in real time. Each station is consists of two sensors, one pressure and one microwave sensor (radar) and a CGPS.

Four tide gauge stations, with microwave sensors, have been installed, in 2013, in Santorini and Corfu Islands and in 2014 in Rhodes Island and Thessaloniki, with data transmitted to NOA-HLNTWC in real time.

Networks operated by NOA

Five out of 21 tide gauge stations of the Hellenic Navy Hydrographic Service are already available in real time to NOA-HLNTWC via ftp communication procedure.

Networks operated by NOA

KORONI – tide gauge station

Radar sensor

Pressure sensor

Data logger & GPS

Networks operated by NOA KITHIRA – tide gauge station

Data logger

Radar & Pressure sensors

GPS

PALEOCHORA – tide gauge station

Radar sensor

Pressure sensor

Networks operated by NOA

SANTORINI – tide gauge station CORFU – tide gauge station

THESSALONIKI– tide gauge station

In the framework of cooperation with JRC, both MOD1 & 2 scenario databases have been fully installed and are already in use. The set of scenarios enables NOA-HLNTWC to estimate wave arrival times and wave heights near the coast. The processing and analysis of the scenarios has been implemented using the Tsunami Analysis Tool.

Tsunami Analysis

Moreover, Tsunami Travel Times software (TTT) by Geoware (kindly provided by NOAA) has also been locally installed and the operator has the possibility to estimate the tsunami arrival time either by using the scenario’s travel time or those calculated by TTT

Tsunami Analysis

A scripting module has been developed in house following Tsunami Analysis Tool messaging output. This module gives to the user the opportunity to send simultaneously all three types of messages, i.e. e-mail, fax and GTS, the last through the Hellenic National Meteorological Service (HNMS) via the dedicated VPN link between HNMS and NOA HL-NTWC operating centers. The SMS technology has also been used during the last exercise (NEAMWAVE14) and the extended Communication Tests.

Message dissemination

Training of the duty officers involved in the 24/7 operation of the HL-NTWC is carried on constantly, since the operators are taking shifts.

NOA-HLNTWC Operational center

Talks and presentations: o The operating procedures of a TSP

o Earthquake and tsunami hazards

o Sea-level measurements

o Operation of dedicated software (TAT, TTT, Seiscomp3 etc)

Global Tsunami Informal Monitoring System

13 reports in 1 year

NOA-HLNTWC participates in the GTIMS project, coordinated by JRC. The aim of the project is to issue pseudo-messages and create Tsunami Analysis Reports for every potential Tsunami event occurring worldwide caused by earthquakes of magnitude equal or greater than 7.0 for a period of 1 year.

Applied to also participate in the second phase of the project – GTIMS2.

NOA-HLNTWC successfully participated in the NEAMWAVE12 exercise that was held in November 2012, providing a pre-computed tsunami scenario.

IOC coordinated Exercises

IOC coordinated Exercises

ICG/NEAMTWS TSUNAMI EXERCISE

NEAMWave14

)

(b)

(c)

NOA-HLNTWC alos successfully participated in the NEAMWAVE14 exercise that was held in October 2014, providing one of the four pre-computed tsunami scenarios.

•3rd Enlarged Communication Test Exercise in October 2013, with the participation of 31 counties and 40 agencies.

IOC coordinated Exercises

3rd Enlarged Communication Test Exercise in October 2013, with the participation of 31 counties and 40 agencies.

CTE6 in July 2015 to be executed

IOC coordinated Exercises

NEAMTIC

Tsunami related educational material has been translated into Greek.

No. Time (UTC) Date Region USGS Final

Mag Mww NOA Final Mag Mw

CTSP NOA HL-NTWC No. EQ Bulletins Issued (NOA mag issued)

No. Threat Bulletins Issued

1 14:18:08 8 Jan 2013 N. Aegean Sea, Limnos Isl. (GR) 5.7 5.7 1

(5.8) 1

(No Threat)

2 16:11:02 15 Jun 2013 Crete Isl. (GR) 6.2 6.1 1

(5.9) 1

(No Threat)

3 21:39:04 16 Jun 2013 Crete Isl. (GR) 6.0 5.8 1

(5.7) 1

(No Threat)

4 13:11:53 12 Oct 2013 W. Crete Isl. (GR) 6.6 6.4 1

(6.3) 1

(No Threat)

5 15:21:05 28 Dec 2013 Cyprus region 5.9 5.9 1

(5.9 EMSC) 1

(No Threat)

6 18:45:08 26 Jan 2014

Ionian Sea, Cephalonia Isl. (GR) 6.1 5.3 1

(5.9) 1

(No Threat)

7 03:08:44 3 Feb 2014

Ionian Sea, Cephalonia Isl. (GR) 6.0 5.9 1

(5.9) 1

(No Threat)

8 20:08:07 4 Apr 2014

Aegean Sea, Hydra Isl. (GR) 5.6 5.4 1

(5.6) 1

(No Threat)

9 09:25:02 24 May 2014

N. Aegean Sea, Samothraki Isl. (GR) 6.9 6.8 1

(6.0) 1

(No Threat)

10 03:45:05 29 Aug 2014

S. Aegean Sea, SE Peloponnesus (GR) 5.8 5.8 1

(5.8) 1

(No Threat)

11 08:52:12 15 Apr 2015 Cyprus region 5.3 5.3 1

(5.6) 1

(No Threat)

12 18:07:44 16 Apr 2015 Kasos Isl. (GR) 6.0 6.0 2

(6.1) 1

(Watch)

13 02:05:42 17 Apr 2015 Kasos Isl. (GR) 5.3 5.4 1

(5.6) 1

(No Threat)

Summary of NOA HL-NTWC Bulletins issued

t h a n k yo u … © Samios G.