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Pacific Coastal and Marine Science Center

PCMSC Seminar Series

Wave attenuation across China Camp tidal marsh

Madeline Foster-Martinez
USGS/UC-Berkeley

Weds., Aug. 31st, 2016, 2:00 PM

Sample slide from presentation.

Abstract: Marshes attenuate incoming wave action by providing friction through vegetative drag. This reduction in wave energy allows sediments to drop out of suspension and settle onto the marsh platform, where they contribute to vertical accretion and marsh sustainability. The ability to reduce wave energy also makes marshes an appealing option for nature-based coastal protection. For these applications and others, quantifying the amount of attenuation and understanding its drivers is critical. For this talk, I will present results from two field campaigns at the China Camp State Park salt marsh in San Pablo Bay. Here the tide flows over mudflats and through three consecutive vegetation zones: cordgrass (Spartina foliosa), cordgrass with pickleweed (Salicornia pacifica), and pickleweed. Measurements were collected during perigean spring tides in winter 2014 and summer 2016. We examined the within marsh variations, as well as the seasonal variation driven by the differing weather regimes, wave climates, and vegetation characteristics. The results highlight the effectiveness of vegetative drag in attenuating wave action under a variety of conditions. This work was performed as part of the NSF/USGS Graduate Research Internship Program advised by Jessie Lacy.

See the schedule


Directions and Parking

Street map of our location.
[Larger version]

From the San Francisco Bay Area:
Take your favorite highway to Hwy 17 South to Hwy 1
At the Hwys 17+1 merge, keep right
Follow signs to “Hwy 1 North, Half Moon Bay, UC Santa Cruz”
Stay on Hwy 1 North (keep in right-most lanes)
Hwy 1 is also named Mission Street — Follow Mission for about 2 miles
At the Western Drive stop light, turn left onto Western Drive
The building right in front of you is the
USGS Pacific Coastal and Marine Science Center
2885 Mission Street

From the south coast or from Hwy 17:
Take Hwy 1 North to west Santa Cruz
At the Western Drive stop light, turn left onto Western
The building right in front of you is the
USGS Pacific Coastal and Marine Science Center
2885 Mission Street

From the north coast:
Take Hwy 1 South to west Santa Cruz
At the Western Drive stop light, turn right onto Western
The building right in front of you is the
USGS Pacific Coastal and Marine Science Center
2885 Mission Street

Parking:
Limited parking spaces may be available in the parking lot located on the NE corner of Western Drive and Mission Street
Limited parking is available along Mission Street and along Natural Bridges Drive
Entrance to PCMSC is at 2885 Mission Street

 Photograph of Natural Bridges, photo by Laura Torresan.

Schedule

See a LIST of all Seminars previously presented.

How to find our Seminar Room:

Schematic shows how to get to the PCMSC seminar room.

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URL: https://walrus.wr.usgs.gov/seminar/
Page Contact Information: Laura Zink Torresan
Page Last Modified: 26 August 2016 (lzt)