Effects of climatic and anthropogenic change on small mountainous rivers: the Salinas River example

Farnsworth, Katherine L.; Milliman, John D.

doi:10.1016/s0921-8181(03)00017-1

Cited by 144 publications

(122 citation statements)

References 20 publications

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“…Small rivers in dry-summer subtropical regions, such as coastal California, are particularly prone to episodic hydrologic event control on sediment discharge, as most precipitation occurs during a short winter season that occasionally produces intense storm events (Inman and Jenkins, 1999;Farnsworth and Milliman, 2003;Warrick and Mertes, 2009). …”

Section: U N C O R R E C T E D a C C E P T E Dmentioning

confidence: 99%

“…Mountainous highlands are mostly composed of Mesozoic-aged sedimentary and metasedimentary rock with some igneous intrusions, while the northern extent of the mainstem valley floor is Tertiary and younger alluvial fill (Nutter, 1901). Land cover in the Salinas watershed largely follows local relief, with steep forested terrain giving way downslope to chaparral/scrub in the wetter western hills and grassland in the drier eastern hills (Farnsworth and Milliman, 2003). Valley bottoms were mostly converted to irrigated agriculture with a small proportion of urbanization (Thompson and Reynolds, 2002).…”

Section: Study Region Characteristicsmentioning

confidence: 99%

“…The largest storms are produced during strong El Niño years (Farnsworth and Milliman, 2003;Andrews et al, 2004). Convection of western tropical moisture through westerly storm tracks generally leads to S-SW impingement of storms (Andrews et al, 2004).…”

Section: Study Region Characteristicsmentioning

confidence: 99%

“…Because of the SE to NW orientation of the basin and its small size, such storms can simultaneously deliver precipitation to the entire watershed to produce the largest floods on record. Orographically forced precipitation in the SW mountain ranges coupled with the preponderance of smaller storms and prevailing storm tracks leads to average annual precipitation rates that are much higher (~ 1000 mm/y) than in the NE region (~ 300 mm/y) (Farnsworth and 7 u n c o r r e c t e d , a c c e p t e d Milliman, 2003).…”

Section: Study Region Characteristicsmentioning

confidence: 99%

“…The provenance of storm waters above the lower Salinas was not a significant factor in determining CSSf for low to moderate flows, which indicates that upper basin wash load signals attenuate before reaching the lower Salinas stations. This is counterintuitive, as the Arroyo Seco and the upper Salinas are on average very different subbasins in terms of relief, area, vegetation and soil characteristics, and fire regimes (Farnsworth and Milliman, 2003;Warrick et al, 2012); and one would expect wash load signatures to differ, as more moderate differences in subbasin characteristics have been shown to cause significant differences in suspended sediment behavior (e.g., Ankers et al, 2003).…”

Section: U N C O R R E C T E D a C C E P T E Dmentioning

confidence: 99%

See 4 more Smart Citations

Suspended sediment behavior in a coastal dry-summer subtropical catchment: Effects of hydrologic preconditions

Gray¹,

Warrick²,

Pasternack³

et al. 2014

Geomorphology

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Section: U N C O R R E C T E D a C C E P T E Dmentioning

confidence: 99%

Section: Study Region Characteristicsmentioning

confidence: 99%

Section: Study Region Characteristicsmentioning

confidence: 99%

Section: Study Region Characteristicsmentioning

confidence: 99%

Section: U N C O R R E C T E D a C C E P T E Dmentioning

confidence: 99%

See 3 more Smart Citations

Suspended sediment behavior in a coastal dry-summer subtropical catchment: Effects of hydrologic preconditions

Gray¹,

Warrick²,

Pasternack³

et al. 2014

Geomorphology

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Sediment Yields and Sediment Budgets

Walling

2005

Encyclopedia of Hydrological Sciences

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Measurements of sediment transport have been undertaken on many rivers throughout the world. Most of the available data relate to suspended sediment loads and the results provide a wealth of information on the variation of suspended sediment yields in both space and time. This contribution reviews current knowledge regarding land–ocean sediment transfer and sediment fluxes to the oceans, global patterns of sediment yield and their controls, and temporal variability of sediment yields in response to both natural controls and human activity and environmental change. In order to understand the sediment response of a drainage basin, it is important to take account of the complex linkages between sediment mobilisation and sediment output, and particularly the role of both short‐ and long‐term storage. The sediment budget provides a useful conceptual framework for this purpose and current understanding of the structure of catchment sediment budgets is reviewed.

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Distribution of branched GDGTs in surface sediments from the Colville River, Alaska: Implications for the MBT′/CBT paleothermometer in Arctic marine sediments

Hanna

Shanahan

2016

JGR Biogeosciences

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Significant climate fluctuations in the Arctic over the recent past, and additional predicted future temperature changes, highlight the need for high‐resolution Arctic paleoclimate records. Arctic coastal environments supplied with terrigenous sediment from Arctic rivers have the potential to provide annual to subdecadal resolution records of climate variability over the last few millennia. A potential tool for paleotemperature reconstructions in these marine sediments is the revised methylation index of branched tetraethers (MBT′)/cyclization ratio of branched tetraethers (CBT) proxy based on branched glycerol dialkyl glycerol tetraethers (brGDGTs). In this study, we examine the source of brGDGTs in the Colville River, Alaska, and the adjacent Simpson Lagoon and reconstruct temperatures from Simpson Lagoon sediments to evaluate the applicability of this proxy in Arctic estuarine environments. The Colville catchment soils, fluvial sediments, and estuarine sediments contain statistically similar brGDGT distributions, indicating that the brGDGTs throughout the system are soil derived with little alteration from in situ brGDGT production in the river or coastal waters. Temperatures reconstructed from the MBT′/CBT indices for surface samples show good agreement with regional summer (June through September) temperatures, suggesting a seasonal bias in Arctic temperature reconstructions from the Colville system. In addition, we reconstruct paleotemperatures from an estuarine sediment core that spans the last 75 years, revealing an overall warming trend in the twentieth century that is consistent with trends observed in regional instrumental records. These results support the application of this brGDGT‐based paleotemperature proxy for subdecadal‐scale summer temperature reconstructions in Arctic estuaries containing organic material derived from sediment‐laden, episodic rivers.

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Effects of climatic and anthropogenic change on small mountainous rivers: the Salinas River example

Cited by 144 publications

References 20 publications

Suspended sediment behavior in a coastal dry-summer subtropical catchment: Effects of hydrologic preconditions

Suspended sediment behavior in a coastal dry-summer subtropical catchment: Effects of hydrologic preconditions

Sediment Yields and Sediment Budgets

Distribution of branched GDGTs in surface sediments from the Colville River, Alaska: Implications for the MBT′/CBT paleothermometer in Arctic marine sediments

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