WorldCat Identities

Kahma, Kimmo K.

Overview
Works: 18 works in 22 publications in 1 language and 41 library holdings
Roles: Author, Contributor
Publication Timeline
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Most widely held works by Kimmo K Kahma
A laboratory study of the minimum wind speed for wind wave generation by Kimmo K Kahma( )

2 editions published between 1985 and 1986 in English and held by 7 WorldCat member libraries worldwide

"This is a fundamental basic study of the formation of waves on water by wind taken to the limit. The study was undertaken by Dr. Kahma who as a post doctoral fellow in the Division has collaborated on a number of studies.The onset of wave generation by wind enables the researcher to effectively discriminate between theories on wave generation as obviously the more correct theory will work better at the limit than the incorrect theory. The study therefore greatly assists in understanding the interaction of wind and water at the microlayer where important exchange processes of energy, mass and momentum take place"--Management perspective, p. iii
Observations of velocities beneath wind-driven waves by M. A Donelan( )

2 editions published in 1986 in English and held by 7 WorldCat member libraries worldwide

"The hydrodynamics of deep water wave breaking (white-capping) is particularly relevant to the development of Canada's offshore conventional energy resources. New knowledge of it will be applied to engineering design, operational efficiency and safety, and environmental protection through improved wave forecasting and improved understanding of mixing processes. This report, sponsored in part by PERD, presents preliminary results obtained from field experiments in 1985"--Management perspective
Shore protection manual's wave prediction reviewed by C. T Bishop( )

2 editions published between 1986 and 1988 in English and held by 5 WorldCat member libraries worldwide

"Empirical steady-state wave prediction methods given in the1984 version of the Shore Protection Manual (SPM) are compared with measured wave data and with three other wave prediction formulas including the one used in 1977 and earlier versions of the SPM. Fetch-limited wave data and overwater wind data from several sources comprise the data set. The other wave prediction formulas are those of Sverdrup-Munk-Bretschneider, JONSNAP and Donelan. Results indicate that the 1984 version of the SPM, which uses an adjusted wind speed factor based on friction velocity, tends to overpredict wave height and period and, statistically, is the poorest predictor of the four methods tested. Use of the adjusted wind speed factor and other wind modifications are discussed"--Abstract, p. i
Elimination of seasonal variation from long-term changes of some nutrients in the Baltic Sea by Kimmo K Kahma( Book )

2 editions published in 1990 in English and held by 3 WorldCat member libraries worldwide

Elimination of sesonal variation from long term changes of some nutrients in the Baltic Sea by Kimmo K Kahma( Book )

1 edition published in 1990 in English and held by 3 WorldCat member libraries worldwide

On the structure and mechanics of pack ice in the Bothnian Bay by Matti Leppäranta( Book )

1 edition published in 1981 in English and held by 2 WorldCat member libraries worldwide

On two-peaked wave spectra by Kimmo K Kahma( Book )

1 edition published in 1981 in Undetermined and held by 2 WorldCat member libraries worldwide

Symposium on Air-Sea Interactions in honour of Prof. S.A. Kitaigorodskii for his 60. anniversary by Symposium on Air-Sea Interactions in Honour of Prof. S.A. Kitaigorodskii for His 60. Anniversary( Book )

1 edition published in 1997 in English and held by 2 WorldCat member libraries worldwide

Estimating optimal weights for combinations of multiple forecasts by Jussi Leinonen( )

1 edition published in 2010 in English and held by 1 WorldCat member library worldwide

Apparatus for atmospheric surface layer measurements over waves( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

On Momentum Flux and Velocity Spectra Over Waves( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

Data from a research tower in Lake Ontario are used to study the validity of Monin-Obukhov scaling in the marine atmospheric boundary layer under various wave conditions. It is found that over pure wind seas, the velocity spectra and cospectra follow established universal scaling laws. However in the presence of swells outrunning weak winds, velocity spectra and cospectra no longer satisfy universal spectral shapes. Here, Monin-Obukhov similarity theory, and the classical logarithmic boundary layers are no longer valid. It is further shown that in the presence of such swells the momentum flux can be significantly modified over pure wind sea values. The implications of these findings for bulk flux estimations and on the inertial dissipation method for calculating fluxes are discussed
Trends in sea level variability in the Baltic Sea( )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

On prediction of the fetch-limited wave spectrum in a steady wind by Kimmo K Kahma( )

1 edition published in 1986 in English and held by 1 WorldCat member library worldwide

#x98;An#x9C; improved estimate for the long-term mean sea level on the Finnish coast by Milla M Johansson( )

1 edition published in 2003 in English and held by 1 WorldCat member library worldwide

Future probabilities of coastal floods in Finland( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract: Coastal planning requires detailed knowledge of future flooding risks, and effective planning must consider both short-term sea level variations and the long-term trend. We calculate distributions that combine short- and long-term effects to provide estimates of flood probabilities in 2050 and 2100 on the Finnish coast in the Baltic Sea. Our distributions of short-term sea level variations are based on 46 years (1971–2016) of observations from the 13 Finnish tide gauges. The long-term scenarios of mean sea level combine postglacial land uplift, regionally adjusted scenarios of global sea level rise, and the effect of changes in the wind climate. The results predict that flooding risks will clearly increase by 2100 in the Gulf of Finland and the Bothnian Sea, while only a small increase or no change compared to present-day conditions is expected in the Bothnian Bay, where the land uplift is stronger. Highlights: We present a method for estimating future flooding risks in coastal areas. Probability distributions of flooding risks allow cost-effective coastal planning. Mean sea level rise of up to 90cm is expected in the Gulf of Finland by 2100. In the Bothnian Bay, flooding risks are not expected to notably increase by 2100
Sea ice and related data sets from the Baltic Sea : AICSEX--metadata report by Pekka Alenius( Book )

1 edition published in 2003 in English and held by 1 WorldCat member library worldwide

Suomen merentutkimuksen ydinkysymykset : Merentutkimuslaitos suomalaisessa yhteiskunnassa( Book )

1 edition published in 2008 in English and held by 1 WorldCat member library worldwide

Central issues in Finnish marine research : the societal role of the Finnish Institute of Marine Research
On momentum flux and velocity spectra over waves by William M Drennan( )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

 
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Alternative Names
Kimmo Kahma Finnish oceanographer, research professor of physical oceanography (emeritus; Finnish Marine Research Institute, which later became part of Finnish Meteorological Institute)

Languages
English (21)