ROYAUME DU MAROC NATIONAL INSTITUTE OF GEOPHYSICS ING

ROYAUME DU MAROC ﺍﻟﻮﻃﻨﻲ ﺍﻟﻤﻌﻬﺪ ﻟﻠﺠﻴﻮﻓﻴﺰﻳﺎﺀ NATIONAL INSTITUTE OF GEOPHYSICS (ING) MOROCCO SEISMIC NETWORK NEAREST MEETING April 1 -3, 2009, Brest, France. A. BIROUK, M. KASMI, A. IBENBRAHIM, A. EL MOURAOUAH, B. ING, CNRST, Morocco.

Moroccan Seismic Network Upgrade • 1 st phase In progress : - 20 BB stations; - 11 SP stations; - VSAT facilities using 2 satellites & dual hub (seismic monitoring availibility even in case of one satellite faillure) - 6 -8 stations linked simultaniuosely by VSAT & VPN for redundancy purpose - 8 stations equiped with STS-2 and Episensor - Data acquisition & processing system (antelope) • Second Phase: - 15 BB stations; - 10 SP stations; - 40 accelerographs; - 15 Portable digital seismographs

Station distribution of the new telemetred seismic network (1 st phase)

Data Acquisition & Processing System DUAL HUB Dual Modem Antelope

Moroccan Seismic Network Upgrade (Central recording System) -2 workstations Sun Ultra 45 -1 Raid System; - Dual Hub - NMS server; - 2 LCD screen 52’’

New Station Installation

New Station Installation

Seismic data exchange Last November, CNRST started the installation of new VSAT Seismic Network: -The Central acquisition system using Antelope software and Dual Hub VSAT System was installed, ; - 2 remote stations(1 BB, 1 SP) already installed and two other programmed for this month; - 2 BB stations in the north of Morocoo can be integrated to Nearest Nodes.

Integration of tide gauge data : CNRST has ordered and bought several months ago (June 2007), a real time digital tide gauge; CNRST signed an agreement with Harbours management department (HMD) for the installation and operating of the tide gauge acquired by the CNRST and to upgrade of tide gauges owned by HMD for real time data communication; Casablanca Harbour was chosen to host the new tide gauge and the installation is scheduled in 3 to 5 weeks. .