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2014

30 sept 2014 - Kartlegging av den norske havbunnen gjennom MAREANO-programmet

posted Sep 1, 2014, 4:39 AM by Knut-Frode Dagestad   [ updated Oct 31, 2014, 4:38 AM ]

Seniorforsker Pål Buhl-Mortensen fra Havforskningsinstituttet gjester BGF tirsdag 30. september for å fortelle om høydepunkter fra MAREANO-programmet (www.mareano.no).

Tittel: Kartlegging av den norske havbunnen gjennom MAREANO-programmet
Tid: 17:00-17:45
Sted: Auditoriet i midtbygningen, 2. etasje Geofysisk Institutt, Universitetet i Bergen

Foredraget er gratis og åpent for alle.
Etter foredraget (ca 45 min) blir det servering av fiskesuppe med brød og drikke i kantinen. Dette er gratis for medlemmer, og koster kr 50,- for andre (inkludert en enhet drikke).
Registrer deg her for å bli medlem i BGF, og få reduserte priser på våre arrangementer.

Send en epost til knutfd@met.no innen fredag 26. september om du vil være med på foredraget og/eller maten etterpå.
Både medlemmer og ikke-medlemmer er velkommen!


English:
Senior scientist Pål Buhl-Mortensen from IMR (www.imr.no) is visiting BGF Tuesday 30 September, to show us some highlights from mapping of the Norwegian seafloor within the large MAREANO programme (www.mareano.no).

The talk is free and open for everyone, and will be given in English.
After the talk, fish soup with bread will be served in the canteen. This is free for members, and costs 50,- for non members (including one unit of drink).
Please registere here to become BGF member, and enjoy reduced fee on some of our events.

Send an email to knutfd@met.no within Friday 26 Sept if you would like to join the talk and/or the food afterwards.
Both members and non-members are welcome!




Sammendrag (Norwegian only):

Kartleggingsprogrammet MAREANO (Marin AREAldatabase for Norske havområder) startet i 2005 som et viktig redskap i utviklingen av forvaltingsplanen for Barentshavet. MAREANO kartlegger dybde og terreng, sedimenter, bunnhabitater, artsmangfold og forurensning i sedimentene. Programmet er et flerfaglig samarbeid mellom Havforskningsinstituttet (HI), Norges Geologiske Undersøkelse (NGU), og Kartverket sjødivisjonen (SKSD). I tillegg til å samle inn nye data samlet eksisterende informasjon integrert på webportalen www.mareano.no. Gode videoopptak av havbunnen er et viktig materiale i kartleggingen. Disse gir informasjon om sedimenter og bunndyr på alle bunntyper i alle slags marine landskap. I tillegg tas det prøver av havbunnen for å dokumentere sedimenttype og biomangfold i mer detalj. Artsammensetning fra video blir brukt til å gruppere lokalitetene. Sammen med prediktorer avledet fra data fra multistråle-ekkolodd (terrengvariabler og backscatter) og oseanografiske data (modellert temperatur, saltholdighet og vannstrøm ved havbunnen) brukes de klassifiserte biologiske dataene til å modellere utbredelsen av biotoper og naturtyper. Ved utgangen av 2013 var 131 000 km2 kartlagt. I den senere tiden har MAREANO prioritert kartlegging i det nye norske havområdet mot grensen til Russland og områdene utenfor midt-Norge. Det har også blitt fokusert på å finne gode metoder for å kombinere modellresultater for biotoper og naturtyper fra ulike områder som har blitt analysert separat. Nye modeller for prediksjon av spesielt truete habitater er utviklet.

1 April 2014 - Johnny A. Johannessen on satellite retrieval of surface current

posted Feb 21, 2014, 1:48 AM by Knut-Frode Dagestad   [ updated Aug 3, 2014, 5:09 AM ]

Tuesday 1 April 2014, Prof. Johnny A. Johannessen from Nansen Environmental and Remote Sensing Center (NERSC) will give us an overview of "Satellite sensor synergy for retrieval of surface current"

Time: 17:00-17:45
Place: East wing auditorium, Geophysical Institute, University of Bergen

After the talk, discussions will continue over a beer or coffee at Cafe Chaos (5 min by foot).

The talk is free of charge, but please register by sending an email to knutfd@met.no
Both members and non-members are welcome!

To become a member of BGF and enjoy reduced fees for some of our events, please register here.


Abstract:
New knowledge of the global ocean surface dynamics emerged over the last 10 - 15 years reveal an ocean filled with a large number of various mesoscale (~100 km) and sub-mesoscale (<~10 km) meandering surface current features and eddies. However we are still faced with challenges when it comes to accurate quantification of the surface current associated with these mesoscale to sub-mesoscale features, and nor is it always possible to provide forecasts of the exact locations and evolution of the frontal features and eddies with sufficient accuracy. This deficiency results primarily from inability to adequately characterize the upper ocean dynamics. This is partly resulting from a lack of regular high-quality in-situ observations with sufficient temporal and spatial resolution. However, more consistent quantitative use of satellite observations is also required to advance the understanding and reduce the knowledge gaps of the ocean surface current and upper layer dynamics at the mesoscale to sub-mesoscale.

Direct and indirect estimates of the surface current and higher level derived quantities such as frontal boundaries can be derived using a variety of satellite sensors including altimetry, gravimetry, SAR, scatterometry, optical sensing and passive microwaves. Each of these satellite based measurement techniques has their specific strength and limitations. By development and use of systematic data merging and sensor synergy combined with advanced processing tools and simulation models, the complementary strength of each sensing technique can be optimized. In so doing the knowledge gaps and deficiencies are relaxed and the final estimate of the surface current and higher level derived products (e.g. frontal boundaries) will be more consistent, regular and reliable.

This presentation will shed more light on this using a variety of examples from a range of different current regimes and geographical areas.



7 February 2014 - Annual meeting

posted Nov 6, 2013, 2:32 AM by Knut-Frode Dagestad   [ updated Aug 3, 2014, 5:09 AM ]

Location

The canteen at Geophysical Institute, Allegaten 70.

Speaker of the evening


Prof. Matthias Kaiser,
Head of Department at

Centre for the Study of the Sciences and the Humanities



Program

  • 19:00-19:30 Annual meeting and information about upcoming events

  • 19:30-20:15 Prof Matthias Kaiser: "Alfred Wegener: Drifting continents and shifting arguments"

    Thomas Kuhn has argued that the sciences progress by scientific revolutions, and he used the change from the geocentric to heliocentric view as example. However, closer to our times one has the example of continental drift / plate tectonics as a possible case for a scientific revolution. Kaiser claims that the history of this scientific revolution displays some, but not all the features of a conceptual change as envisaged by Kuhn. Socio-cultural factors did play a role in the resistance to Wegener’s drift theory, but also the quality of the available evidence was crucial in the long run. Many basic features of the workings of science can be illustrated with reference to this history between 1912 and 1967. In the talk, Kaiser will point to some of them which he believes are still useful in out teachings of science.
  • 20:30-02:00 Dinner and party

The annual meeting and talk (auditorium in east wing) is free and open for everyone.
The fee for the dinner and party (in the canteen) is 150,- for students, 200,- for members, and 250,- for non-members. The fee can be paid in cash at the entrance, or to bank account 0530.29.99068

A buffet from Prestige catering will be served, including:

  • Tagine Lam marinert i spesielle blanding av urter og krydder, langsomt stekt til kjøttet nærmest
    faller av benet. Servert med svisker, rosiner, sesamfrø, kvede og ovnsbakt potet
  • Lammekjøtt cous cous servert med gresskar, gulrøtter, kålrot, squash, tomater, løk og kikerter.
  • Vegetar cous cous med gresskar, gulrøtter, kålrot, squash, tomater, løk og kikerter

  • Cheese cake for dessert

Drinks are for sale at happy prices.
Dress code: informal.

Register by email to knutfd@met.no before Wednesday 4 February. Please indicate any special dietary wishes.


Logo design contest

Although existing since 1949, Bergen Geofysikeres Forening has never had a logo! Thus we invite our members (and others) to participate in a logo design contest.

There are no strict guidelines, but the logo should be suitable for use both on this website and on printed paper/letters.
Your suggestion (figure) can be sent by mail to knutfd@met.no before 5 February 2014.
The board will then chose the best logo, and its designer will be awarded a prize at the annual party.




18 Nov 2014 - BGF career opportunities

posted Apr 11, 2013, 5:16 AM by Knut-Frode Dagestad   [ updated Feb 9, 2015, 5:01 AM ]

About 45 students (and others) participated at the "career opportunities" on 18 November.
We had 8 presentations from various institutes and companies as well as a representative of school teachers.
  • Norwegian Meteorological Institute (Anne Solveig Andersen and Berit Hagen)
  • Institute of Marine Research (Vidar Lien)
  • StormGeo (Cecilie Villanger and Lillian Bergheim)
  • Teaching/Schools (Åse Heilund Midttun, Sandsli VGS)
  • NERSC (Lasse Pettersson)
  • NIVA (Andrew Luke King)
  • Aanderaa Data Instruments (Ailin Brakstad)
  • Polytec (Leonid Vasilyev and Konstantinos Christakos)


Afterwards, pizza and drinks were served in the canteen, where students also got a chance to speak to potential future employers.

All the presentations are available at the bottom of this page.

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