Taraldsvikfossen Reservoir

A solid ice cover formed in the morning of 16 Oct 2016, reaching 15 cm thickness by 28 Oct. Stress cells were installed on 28 Oct and connected the following day.

Six measurement stations were installed at the dam. Stations B and F have one pressure cell installed each, while Stations A, C, D, and E have four cells each. Vertical levels are aligned between stations with all sensors in Station C mounted 3 cm low. Load reducers were applied to Stations B, C, E, and F. Station D measures stresses in the narrow ice bridge between Stations C and E.

Ice load tests under varying water level started on 7 Mar 2017.

Measurement stations mounted at the dam. Photo taken during snow fall on 17 Jan 2016.
Measurement station design at the dam, Season 2014/15.

Measurements

Current measurements are available as Excel 2007 spreadsheet Taraldsvik_consolidated_data.xlsx.

Recent measurements:

  • Battery Voltage: 13.8 V (21 Oct 2017, 19:45 CET)
  • Air Temperature: -2.5 °C (21 Oct 2017, 19:45 CET)
  • Water Temperature at 1.3 m: 1.5 °C (21 Oct 2017, 19:45 CET)

Estimated Line Load due to ice pressure at the dam, not quality controlled. (interactive figure, png, pdf)

Stresses and Temperatures

Sensors at the dam

Pressure sensor data at Station A. A1 is at the top. (interactive figure, png)
Pressure sensor data at Station C. C1 is at the top. (interactive figure, png)
Pressure sensor data at Station D. D1 is at the top. (interactive figure, png)
Pressure sensor data at Station E. E1 is at the top. (interactive figure, png)
Pressure sensor data just below original water level. (interactive figure, png)
Pressure sensor temperatures at Station A. A1 is at the top. (interactive figure, png)
Pressure sensor temperatures at Station C. C1 is at the top. (interactive figure, png)
Pressure sensor temperatures at Station D. D1 is at the top. (interactive figure, png)
Pressure sensor temperatures at Station E. E1 is at the top. (interactive figure, png)
Pressure sensor temperatures just below original water level. (interactive figure, png)
Water level above normal, air temperature, and temperature of the water level sensor (approx. 1.35 m below water level). (interactive figure, png, pdf)
Comparison of measured stresses with modeled thermal stresses. (interactive figure, png, pdf)

Overview cameras

Taraldsvikfossen Reservoir
04 Oct 2017Norut Narvik

Taraldsvikfossen Reservoir

Taraldsvikfossen Rerservoir
21 Oct 2017Norut Narvik

Taraldsvikfossen Reservoir

Tjårdavatnet and Iptojávri

Tjårdavatnet
03 Jul 2017Norut Narvik

Tjårdavatnet

Tjårdavatnet
22 Aug 2017Norut Narvik

Tjårdavatnet

Iptojávri
04 Oct 2017Norut Narvik

Iptojávri

Summary Data

Summary of ice formation and break-up

Click on dates in table below to watch timelapse movies.
TaraldsvikfossenTjårdavatnetIptojávriKalhovdfjorden
2013 break-up 18-22 May- - -
2013 ice formation17 Oct 19 Nov - -
2014 break-up 24-29 May7-20 Jun- -
2014 ice formation12 Oct 5 Nov 10-27 Oct -
2015 break-up 29 May-3 Jun1-19 Jul29 Jun-5 Jul -
2015 ice formation12 Nov 21 Nov 16 Nov -
2016 break-up14-17 May
?
26 May-1 Jun -
2016 ice formation16 Oct . 3 Nov 3 Nov
The 2016 water level was too low in Tjårdavatnet during break-up to determine the break-up date from the camera vantage point. Based on satellite images, the estimate would be around 8 June 2016.

 

Timelapse of Ice Seasons

Processed Data of Previous Years

Taraldsvikfossen data recorded in previous seasons are available here (Excel 2007 files, 30 to 100 MB each):

References

  1. O'Sadnick, M., C. Petrich, B. Arntsen, and B. Sand (2016). Observations of Ice Stress at Taraldsvikfossen Reservoir, Narvik, Norway. In Proceedings of the 23rd IAHR International Symposium on Ice, Ann Arbor, Michigan, USA, 31 May to 3 June 2016.
  2. O'Sadnick, M., C. Petrich, B. Arntsen, and B. Sand (2016). One Year of Timelapse Photography at Two Norwegian Reservoirs- Observations and Recommendations for Future Field Campaigns to Monitor Ice Stress. In Proceedings of the 23rd IAHR International Symposium on Ice, Ann Arbor, Michigan, USA, 31 May to 3 June 2016.
  3. Petrich, C., I. Sæther, B. Sand, and B. Arntsen (2016). Comparing field data with numerical simulations of ice loads on dams. In Proceedings of the 23rd IAHR International Symposium on Ice, Ann Arbor, Michigan, USA, 31 May to 3 June 2016.
  4. Petrich, C., I. Sæther, L. Fransson, B. Sand, and B. Arntsen (2015). Time-dependent spatial distribution of thermal stresses in the ice cover of a small reservoir. Cold Regions Science and Technology, 120, 35-44, http://dx.doi.org/10.1016/j.coldregions.2015.09.003.
  5. Petrich, C., I. Sæther, L. Fransson, B. Sand, and B. Arntsen (2014). Preliminary results from two years of ice stress measurements in a small reservoir, In Proceedings of the 22nd IAHR International Symposium on Ice, Singapore, 11–15 August 2014, A. W.-K. Law (ed), NEWRI Nanyang Technological University, Singapore. 452-459. doi:10.3850/978-981-09-0750-1_1191 (pdf)

NRK Nordland reported on 25 Feb 2015: NRK TV

Raw Data

Measurements are currently available as xlsx file that can be opened with MS Office 2007 or later, MS Office Excel viewer, or Libre Office.

Raw data files from the data logger are available here. The mapping file 1187_data_map.xml describes the pertinent measurements.

About Norut

Norut (Northern Research Institute) is a Norwegian research group that produces knowledge with practical applicability relevant to the High North within technology and social science. We carry out research commissions for both private and public sectors.

About ColdTech

ColdTech is a project to develop and apply competence in Cold Climate Technology to the benefit of northern Norway. ColdTech is hosted by Norut Narvik and Narvik University College.

Get in Touch

  • Phone:
    +47 76 96 53 50
  • Email:
    info@tek.norut.no
  • Address:
    Norut Narvik
    Rombaksveien 47
    8517 Narvik, Norway