Paul D. Komar
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View article: Incorporating climate change and morphological uncertainty into coastal change hazard assessments
Incorporating climate change and morphological uncertainty into coastal change hazard assessments Open
Documented and forecasted trends in rising sea levels and changes in storminess patterns have the potential to increase the frequency, magnitude, and spatial extent of coastal change hazards. To develop realistic adaptation strategies, coa…
View article: COVER PHOTOGRAPH AND FRONT MATTER: OTTER CREST TERRACE, OREGON, U.S.A
COVER PHOTOGRAPH AND FRONT MATTER: OTTER CREST TERRACE, OREGON, U.S.A Open
The Otter Crest terrace on the central Oregon coast, about 12 km north of Newport, consisting of a moderately resistant Tertiary siltstone overlain by an uplifted Pleistocene beach deposit that contains closely similar sedimentary structur…
View article: Higher waves along U.S. East Coast linked to hurricanes
Higher waves along U.S. East Coast linked to hurricanes Open
Ocean wave heights measured by buoys along the U.S. Atlantic coast document an increase during the summer months when hurricanes are most important to wave generation. Wave heights greater than 3 meters, which can be attributed to specific…
View article: The Architecture of Morning and Afternoon
The Architecture of Morning and Afternoon Open
The architecture of Morning and Afternoon. Create still life paintings using tenets of Purism to search for new form(s) from real objects. The paintings will be used to inspire and inform new designs for and architecture project. Using pai…
View article: The Pacific Northwest coast: living with the shores of Oregon and Washington
The Pacific Northwest coast: living with the shores of Oregon and Washington Open
By PAUL D. KOMAR. xv and 195 pp.; maps, diagrs., ills., bibliog., index. Durham, N.C.: Duke University Press, 1997. $54.95 (cloth), ISBN 082232010X; $18.95 (paper), ISBN 0822320207. Coasts attract human settlements. For many of us, the lur…
View article: Environmental Controls on Littoral Sand Transport
Environmental Controls on Littoral Sand Transport Open
Quantities of sand transported along beaches are generally related to the "longshore component of wave power", F^, through the proportionality is = KF£ where l8 is the immersed-weight sand transport rate and K is a dimensionless proportion…
View article: TRACERS OF SAND MOVEMENT ON THE OREGON COAST
TRACERS OF SAND MOVEMENT ON THE OREGON COAST Open
The study of sand mineralogy and grain rounding can help answer many questions of immediate concern to coastal engineers or to broader issues of beach preservation. The heavy-mineral contents of sands, together with statistical techniques …
View article: The application of flow competence evaluations to the assessment of flood-flow velocities and stresses
The application of flow competence evaluations to the assessment of flood-flow velocities and stresses Open
The concept of flow competence is generally employed to evaluate the velocities, discharges, and bottom stresses of river floods inferred from the size of the largest sediment particles transported. Flow competence has become an important …
View article: CHANGES DUE TO JETTIES AT TILLAMOOK BAY, OREGON
CHANGES DUE TO JETTIES AT TILLAMOOK BAY, OREGON Open
Bayocean Spit, separating Tillamook Bay from the Pacific Ocean on the north Oregon coast, underwent severe erosion following construction of a north jetty at the bay entrance in 1914-17. This erosion ultimately led to the complete breachin…
View article: GROIN LENGTH AND THE GENERATION OF EDGE WAVES
GROIN LENGTH AND THE GENERATION OF EDGE WAVES Open
A series of wave basin experiments were undertaken to better understand the selection of groin spacings and lengths. Rather than obtaining edge waves with the same period as the normal incident waves, subharmonic edge waves were produced w…
View article: SEDIMENT THRESHOLD UNDER OSCILLATORY WAVES
SEDIMENT THRESHOLD UNDER OSCILLATORY WAVES Open
As the velocity of the water motion near the bottom under oscillatory waves is increased, there comes a stage when the water exerts a stress on the particles sufficient to cause them to move. This study reviews data on threshold of sedimen…
View article: AIRY WAVE THEORY AND BREAKER HEIGHT PREDICTION
AIRY WAVE THEORY AND BREAKER HEIGHT PREDICTION Open
Using a critical value for Yt> = H./ h. as a wave breaking criterion, where Hb and hb are respectively the wave breaker height and depth, applying Airy wave theory, and assuming conservation of the wave energy flux, one obtains 1/5 2 2/5 H…
View article: LONGSHORE TRANSPORT OF SAND
LONGSHORE TRANSPORT OF SAND Open
Simultaneous field measurements of the energy flux of breaking waves and the resulting longshore transport of sand in the surf zone have been made along three beaches and for a variety of wave conditions. The measurements indicate that the…
View article: Mud volcanoes on Mars?
Mud volcanoes on Mars? Open
The term mud volcano is applied to a variety of landforms having in common a formation by extrusion of mud from beneath the ground. Although mud is the principal solid material that issues from a mud volcano, there are many examples where …