Marta Pérez‐Arlucea

Universidade de Vigo

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Rita González-Villanueva

Universidade de Vigo

Susana Costas

University of Algarve

Norman D. Smith

University of Nebraska–Lincoln

I. Alejo

Universidade de Vigo

M. R. Leeder

University of East Anglia

Alfonso Sopeña

Instituto de Geociencias

MÃ

Miguel Ãngel Nombela

Universidade de Vigo

Guillermo Francés

Universidade de Vigo

Anxo Mena

Universidade de Vigo

Greg H. Mack

New Mexico State University

Cooperative Institutions

Universidade de Vigo

Consejo Superior de Investigaciones Científicas

Universidade de Santiago de Compostela

Universidad Complutense de Madrid

Instituto de Investigacións Mariñas

New Mexico State University

Instituto Geológico y Minero de España

Universitat de Barcelona

University of the Highlands and Islands

University of East Anglia

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Elevation adjustments of paired natural levees during flooding of the Saskatchewan River

Earth Surface Processes and Landforms (2009)

Norman D. Smith Marta Pérez‐Arlucea Douglas A. Edmonds Rudy Slingerland

Abstract Natural levees control the exchange of water between an alluvial channel and its floodplain, but little is known about the spatial distribution and evolution of levee heights. The summer 2005 flood of the Saskatchewan River (Cumberland Marshes, east‐central Saskatchewan) inundated large areas of floodplain for up to seven weeks, forming prominent new deposits on natural levees along main‐stem channels. Measurements of flood‐deposit thickness and crest heights of 61 levee pairs show that the thickest deposits occur on the lower pre‐flood levee in 80% of the sites, though no clear relationship exists between deposit thickness and magnitude of height difference. Only 16% of the pairs displayed thicker deposits on the higher levee, half of which occurred at sites where relatively clear floodbasin waters re‐entered turbid channels during general flooding. Difference in crest elevation (Δ E ) between paired levees is approximately log‐normally distributed, both before and after the flood, though with different mean values. Supplemental observations from tank experiments indicate that during near‐bankfull flows, temporally and spatially variable deposition and erosion occur on levees due to backwater effects associated with nearby channel bars and irregular rises of the channel bed forced by channel extension. During floods, preferential deposition in lows tends to even out crest heights. Copyright © 2009 John Wiley & Sons, Ltd.

Crest

Deposition

Elevation (ballistics)

10.1002/esp.1792

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Citations (36)

Normal faulting and crustal deformation, Alkyonides Gulf and Perachora peninsula, eastern Gulf of Corinth rift, Greece

Journal of the Geological Society (2005)

M. R. Leeder C. Portman Julian E. Andrews Richard Collier Emma Finch

Geophysical, structural, geochronological and geomorphological data indicate that the Psatha, East Alkyonides, Skinos and Pisia faults are Holocene-active structures whereas the status of the West Alkyonides, Strava, Perachora and Loutraki faults is less certain. We see no evidence for significant lateral surface fault growth. New data for late Pleistocene footwall uplift of the Psatha fault are comparable with previously estimated Holocene rates. Pre-Holocene stratigraphic sequences in the Alkyonides Gulf allow calculation of vertical displacement on the Skinos fault of 1.42–1.60 km over a period of >0.6 Ma. Previous palaeoseismological studies indicate comparable displacement rates extrapolated to 0.61–2.20 Ma, whereas extrapolation of previous geodetic data indicate a range of 0.17–0.46 Ma. The latter is too short given the evidence of the stratigraphic record, signifying either that these data may not be representative of longer-term rates, or that significant deformation has taken place elsewhere, for example, on offshore antithetic faults. A case is established for uniform late Quaternary (post-MIS 7) uplift of the Perachora peninsula at rates of c . 0.2–0.3 mm a −1 . The lack of regional tilting over Perachora–Corinth–Isthmia is in marked contrast to the situation in the Alkyonides–Megara basins to the east.

Peninsula

Rift zone

10.1144/0016-764904-075

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Citations (71)

Time Series of Water Levels in a Coastal Barrier-Lagoon System, NW Spain (2009-2012)

Zenodo (CERN European Organization for Nuclear Research) (2023)

Rita González-Villanueva Marta Pérez‐Arlucea Susana Costas

This repository contains the data recorded by water-level loggers (survey-pressure transducers) deployed in a barrier-lagoon coastal system, which were used in the study by R. González-Villanueva, M. Pérez-Arlucea, and S. Costas titled 'Lagoon Water-Level Oscillations Driven by Rainfall and Wave Climate,' published in Coastal Engineering, Volume 130, 2017, Pages 34-45, ISSN 0378-3839, available at https://doi.org/10.1016/j.coastaleng.2017.09.013 The repository consists of three text files: lagoon_water_level.txt sea_level.txt phreatic_level.txt Each file includes a header with metadata and information for each column in the data file, as follows: pt_id: ID of the individual record pt: instrument used lat: Latitude in WGS84 long: Longitude in WGS84 units: Indicates the measurement unit for the water level recordings temporal resolution: Indicates the time interval between two consecutive measurements column 1: Description of the data contained in column 1 column 2: Description of the data contained in column 2 column n: Description of the data contained in column n

10.5281/zenodo.8380972

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A novel sedimentological method based on CT-scanning: Use for tomographic characterization of the Galicia Interior Basin

Sedimentary Geology (2015)

Anxo Mena Guillermo Francés Marta Pérez‐Arlucea Pablo Aguiar José Daniel Barreiro‐Vázquez

Characterization

10.1016/j.sedgeo.2015.03.007

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Citations (30)

Lagoon water-level oscillations driven by rainfall and wave climate

Coastal Engineering (2017)

Rita González-Villanueva Marta Pérez‐Arlucea Susana Costas

Outflow

Berm

Peninsula

10.1016/j.coastaleng.2017.09.013

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Citations (12)

8000 years of environmental evolution of barrier–lagoon systems emplaced in coastal embayments (NW Iberia)

The Holocene (2015)

Rita González-Villanueva Marta Pérez‐Arlucea Susana Costas Roberto Bao Xosé Luís Otero

The rocky and indented coast of NW Iberia is characterized by the presence of highly valuable and vulnerable, small and shallow barrier–lagoon systems structurally controlled. The case study was selected to analyse barrier–lagoon evolution based on detailed sedimentary architecture, chronology, geochemical and biological proxies. The main objective is to test the hypothesis of structural control and the significance at regional scale of any high-energy event recorded. This work is also aimed at identifying general patterns and conceptualizing the formation and evolution of this type of coastal systems. The results allowed us to establish a conceptual model of Holocene evolution that applies to rock-bounded barrier–lagoon systems. The initial stage (early Holocene) is characterized by freshwater peat sedimentation and ended by marine flooding. The timing of the marine flooding depends on the relation between the elevation of the basin and the relative mean sea-level position; the lower the topography, the earlier the marine inundation. Thus, the age of basin inundation ranged from 8 to 4 ka BP supporting significant structural differences. Once marine inundation occurred, all systems followed similar evolutionary patterns characterized by a phase of landward barrier migration and aeolian sedimentation towards the back-barrier (i.e. retrogradation) that extended circa 3.5 ka BP. The later phases of evolution are characterized by a general trend to the stabilization of the barriers and the infilling of the lagoons. This stabilization may be temporally interrupted by episodes of enhanced storminess or sediment scarcity. In this regard, washover deposits identified within the sedimentary architecture of the case study explored here suggest pervasive high-energy events coeval with some of the cooling events identified in the North Atlantic during the mid- to late Holocene.

10.1177/0959683615591351

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Citations (27)

Applied Sciences: “Coastal Deposits: Environmental Implications, Mathematical Modeling and Technological Development”

Applied Sciences (2020)

Marta Pérez‐Arlucea Rita González-Villanueva

A large percentage of the world’s population lives along the coastal zones, with more than half of the world’s population living in coastal areas [...]

10.3390/app11010119

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Citations (1)

Tectonic and climatic controls on Holocene channel migration, incision and terrace formation by the Rio Grande in the Palomas half graben, southern Rio Grande rift, USA

Sedimentology (2010)

Greg H. Mack M. R. Leeder Marta Pérez‐Arlucea MEREDITH DURR

Abstract In order to evaluate potential effects of tectonics and climate change on the behaviour of the axial Rio Grande in the Rio Grande rift, a 16·5 km stretch of modern floodplain and Holocene terraces were mapped in the tectonically active Palomas half graben, south‐central New Mexico, USA. In addition, 51 cores and natural exposures were logged and 20 radiocarbon dates were obtained from charcoal, bulk organic matter, mollusc shells and pedogenic calcite. The Holocene alluvium comprises four terraces above the modern floodplain, each of which formed by a period of river incision followed by stability and renewed floodplain construction to a level below that of the previous terraces. Estimated times of incision between Terraces I and II, II and III, and III and IV are after 12 400, 8040 to 5310, and 760 to 550 yr bp , respectively, whereas the incision between Terrace IV and the modern floodplain occurred within the last 260 years. Although there is some evidence for tectonic control on river behaviour in the southern part of the basin, terrace formation is interpreted as being related to climate change, with periods of incision corresponding to times of increased aridity and low sediment/water discharge ratio in the Rio Grande. This process may have resulted from a reduction in intensity and magnitude of summer storms which supply sediment to the axial river, coupled with an increase in spring discharge peak caused by snowmelt in upstream mountain catchments.

Terrace (agriculture)

10.1111/j.1365-3091.2010.01195.x

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Citations (11)

Evolution of the Galicia Interior Basin over the last 60 ka: sedimentary processes and palaeoceanographic implications

Journal of Quaternary Science (2018)

Anxo Mena Guillermo Francés Marta Pérez‐Arlucea Till J J Hanebuth Vera Barbara Bender

ABSTRACT The Galicia Interior Basin (GIB; NW Iberian Peninsula) is located near a critical transition between the subtropical (temperate) and subpolar (cold) gyres of the North Atlantic. It therefore witnesses oceanographic changes driven by global climatic events. This study reports on the recent (latest Pleistocene) sedimentary, palaeoceanographic and palaeoclimatic history of the basin. We integrated analysis of deep‐sea sediment cores retrieved from an E–W transect across the GIB. The analysis indicated three types of sedimentary processes recording glacial (Marine Isotope Stage 2–4) and deglacial events: along‐slope bottom currents (forming contourite deposits), pelagic and hemipelagic sedimentation, and gravitational dislocation. Variation in depositional patterns and sedimentation rates indicate distinctive transport (along‐slope and down‐slope) and depositional processes. These in turn reflect climatic and oceanographic drivers. We interpret changes in sea level from core evidence showing changes in sediment supply. The cores exhibited conspicuous sedimentary evidence of Heinrich events (HEs). The stratigraphic intervals associated with HEs showed significant lateral variation. We suggest that the lateral variation may result from the development of an oceanographic boundary between surface water masses with different temperature and salinity parameters or changes in surface currents which may have introduced relatively warmer water into the GIB during the last glacial period.

Contourite

Last Glacial Maximum

10.1002/jqs.3032

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Citations (17)

Onset, evolution and main processes shaping sandy coastal barriers within rocky indented coasts

AGU Fall Meeting Abstracts (2019)

Roberto Bao Rita González-Villanueva Armand Hernández Susana Costas R. Carballeira

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