1 / 23

Anat (21)

In Memory of Aviel Ron Director General of the Survey of Israel (1994-2002) and his two children- Anat and Ofer Murdered during a terror attack in Haifa 31.03.2002. Ofer (17). Aviel Ron (54). Anat (21). Israeli Coast Sea Level Changes During 1958-2001

floresd
Download Presentation

Anat (21)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. In Memory of Aviel Ron Director General of the Survey of Israel (1994-2002) and his two children-Anat and Ofer Murdered during a terror attack in Haifa 31.03.2002 Ofer (17) Aviel Ron (54) Anat (21)

  2. Israeli Coast Sea Level Changes During 1958-2001 Boris Shirman boris@soi.gov.il Yossi Melzer melzer@soi.gov.il Survey of Israel

  3. Targets of Sea Level Monitoring in SOI Update the “zero level” value of the geodetic vertical network Determination of long term changes and variation in sea level Maritime Mapping Collecting Data for interdisciplinary research

  4. The Mediterranean Basin and the Israeli Coast

  5. SOI Tide gauge array along the Med. Sea 2002 (Satellite Image)

  6. SOI Tide gauge array along the Med. Sea 2002 Port Of Haifa Tel Aviv Marina Port of Ashdod Ashqelon Marina

  7. Port of Haifa Cooperation between SOI and IPA Radarsensor Kalesto

  8. Port Of Haifa Cooperation between SOI and IPA

  9. Tel Aviv – Marina SOI station-digital float tide gauge

  10. Port of Ashdod Cooperation between SOI and IPA-digital float tide gauge

  11. Ashkelon Marina SOI station-digital float tide gauge

  12. Tide Gauge Calibration

  13. Maintenance Procedure Data Download – Every week Tide Gauge Calibration – Every week Data Processing – Every week Tide Gauge and BM stability – Twice a year Pipe maintenance by diver – Twice a year Annual Report Equipment maintenance-according needs

  14. Types of data used for the study Years Location data source data sampling data source 1958-1960 Ashdod Tables Month Avr. IPA 1961-1984 Ashdod Tables Hour Avr. IPA 1962-1989 Yafo Analog Digitizing SOI 1990-1995 Ashdod Analog Digitizing SOI 1996-2001 Tel-Aviv Digital 5 min SOI

  15. Comparison Between Tel Aviv data and … Ashdod data Mean: 1 cm

  16. Recorded Spectrum Analysis

  17. Predicted Spectrum Analysis

  18. Comparison between the monthly mean sea level of Yafo and Ashdod The differences corrected to Yafo Datum (remained stable) S.D. of 4 cm (random according to stat. test) 62-67: -0.2cm 68-83: -4.8cm

  19. Israeli Cost Sea Level 1958-2001 Average: +5.9 cm Yearly cycle Multi year cycle~20y Spectrum Analysis FFT Half year cycle Third year cycle (Meteo. Effect)

  20. Israeli Coast Yearly mean sea level 1958-2001

  21. Time serious avereges during a period of 18.6 years

  22. Future Plans To improve accuracy of the digitized data To digitize analog data previous to 1958 To apply advanced models

  23. Summary The research indicates the existence of several periods of sea level cycles: Monthly, Yearly, Multi-Yearly Since 1991 the sea level rose more than 10 cm We must follow the present multi year cycle in order to verify sea level rise along the Israeli coast We are looking to find correlation with other sites at the Mediterranean Sea

More Related