The GLISN Greenland stations of Schweizerischer Erbebendienst (SED) ETH Zürich John Clinton Seismic Network Manager @SED Copenhagen, 14 Sept 2009 Monday 14 September 2009 KULLO ILULI Monday 14 September 2009 SNF Re’Quip Budget ~CHF190,000 (Sept 2008) original plan: contribute to single ice sheet infrastructure secondary plan: 3 stations: STS-2 Q330S need local power / ADSL (limited budget) KULLO ILULI Monday 14 September 2009 Summary of Plans Spring 2009 : purchase equipment, identify 1st 2 sites Summer 2009 : Install Ilulissat / Kullorsuaq Winter 2010 : identify 3rd site Summer 2010 : Install Kangersuatsiaq (backup: Upernavik) SED Visit 2009- 10 July - 21 July Monday 14 September 2009 Site Selection and Installations Motivation to select Kullorsuaq / Ilulissat: - add infrastructure to most critical (but accessible areas) - aid GLISN if funded - aid GEUS immediately (met in Copenhgen, Autumn 2008) - aid ETH research if possible (SwissCamp near Ilulissat) How did we find the sites? - GEUS contacts @ Kullorsuaq (no English) - Contacts with Glaciologists @Ilulissat -> Civil Authorities - have to rely on 1. photos / email conversations for site selection (plus, luckily, some prev. GEUS knowledge) 2. TeleGreenland for communications options Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Ilulissat Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Installation: Kullorsuaq Monday 14 September 2009 Internal Network in ILULISSAT Communications Setup 129.132.16.104/29 ETH_Naqs_Server System 129.132.16.104/29 Internal network route static to VPN remote node: g-rtreth.ethz.ch Remoteaccess with WS Internal ETH Subnetwork 129.132.16.104/29 ETH internal Network Router: a-rtrILULI.ethz.ch IP address DHCP GRE tunnel end address : 192.168.3.10 82.130.126.12 Router g-rtreth.ethz.ch ADSL internal IP:192.168.1.x Internet Telegreenland Telegreenland ISDN Box Router ADSL Interface external IP:xx.xxxx.xxx.xx Telephone Provider green = Telephone remoteaccess Red = VPN Tunnel Blue = internal ETH network Monday 14 September 2009 Open Data Policy (in line with GLISN) - RT data currently accessed by ODC, IRIS, GFZ, GEUS - anyone who wants can access SED Greenland SeedLink server greenland.ethz.ch (LH (1sps), BH (20sps), HH (100sps) + SOH) - excellent latency (~5-10s ave @ODC) - excellent uptime with ADSL Monday 14 September 2009 Evaluation of Sites -PQLX images from Ilulissat Monday 14 September 2009 Evaluation of Sites -PQLX images from Ilulissat, compared with GEUS campaign, 2004 (STS2 in Hospital) Monday 14 September 2009 Evaluation of Sites -waveforms from Ilulissat Monday 14 September 2009 Evaluation of Sites -waveforms from Ilulissat Monday 14 September 2009 Evaluation of Sites -PQLX images from Kullorsuaq Monday 14 September 2009 Evaluation of Sites -PQLX images from Kullorsuaq, compared with GEUS campaign, 2004 (STS2 @ same location) Monday 14 September 2009 Interesting Observations so far.... Ilulissat Harbour Tide Gauge 50km ILULI Summer 2009 Location of Calving Front 5km IceFjord Tide Gauge Monday 14 September 2009 Interesting Observations so far.... ILULI N ILULI E ILULI Z - tide gauge, 5km away from calving front - tide gauge @ Iulissat harbour, ~50km away Monday 14 September 2009 ILULI N - tide gauge @ Iulissat harbour, ~50km away - tide gauge, 5km away from calving front Monday 14 September 2009 Monday 14 September 2009 Future Station Option1: Kangersuatsiaq ~1hr south of Upernavik by fast boat (~60km) ~150persons rock outcrops, almost no vehicles Monday 14 September 2009 Future Station Option1: Kangersuatsiaq ~1hr south of Upernavik by fast boat (~60km) ~200persons rock outcrops, almost no vehicles Text Monday 14 September 2009 Future Station Option1: Kangersuatsiaq ~1hr south of Upernavik by fast boat (~60km) ~200persons rock outcrops, almost no vehicles Monday 14 September 2009 Future Station Option2: Upernavik ~2,000 person, 3/week flight to Ilulisat, all weather ~many vehicles, same noise problems as Ilulissat - identified a few sites on edge of village Monday 14 September 2009 Future Station Option2: Upernavik ~2,000 person, 3/week flight to Ilulisat, all weather ~many vehicles, same noise problems as Ilulissat - identified a few sites on edge of village Monday 14 September 2009 Future Station Option2: Upernavik ~2,000 person, 3/week flight to Ilulisat, all weather ~many vehicles, same noise problems as Ilulissat - identified a few sites on edge of village Monday 14 September 2009.