scholarly journals Rapid wetland expansion during European settlement and its implication for marsh survival under modern sediment delivery rates

Geology ◽  
2011 ◽  
Vol 39 (5) ◽  
pp. 507-510 ◽  
Author(s):  
Matthew L. Kirwan ◽  
A. Brad Murray ◽  
Jeffrey P. Donnelly ◽  
D. Reide Corbett
Keyword(s):  
Sediment Delivery ◽  
Modern Sediment ◽  
European Settlement

scholarly journals Rapid wetland expansion during European settlement and its implication for marsh survival under modern sediment delivery rates: COMMENT

Geology ◽  
2012 ◽  
Vol 40 (12) ◽  
pp. e284-e285 ◽  
Author(s):  
A.M. Priestas ◽  
S. Fagherazzi ◽  
C.A. Wilson ◽  
D.M. FitzGerald
Keyword(s):  
Sediment Delivery ◽  
Modern Sediment ◽  
European Settlement

KAJIAN EROSI LAHAN DI KAWASAN AIR STRIP RUNWAY 2600 BANDARA DEPATI AMIR (PGK) BERDASARKAN TATA GUNA LAHAN MASTERPLAN ULTIMATE

2019 ◽  
Vol 7 (2) ◽  
pp. 100-111
Author(s):  
Miskar Maini ◽  
Junita Eka Susanti
Keyword(s):  
Sediment Yield ◽  
Soil Loss ◽  
Universal Soil Loss Equation ◽  
Delivery Ratio ◽  
Sediment Delivery Ratio ◽  
Sediment Delivery ◽  
Soil Loss Equation

Standar permintaan engineering pesawat agar desain bangunan infrastruktur di area Air Strip Runway 2600 yang ada dapat mempunyai fungsi lain. Sedangkan kondisi lain sangat menentukan keselamatan karena lahan di sekitar Air Strip Runway 2600 Bandara Depati Amir (PGK) jika tidak ditutupi vegetasi seperti rumput, kondisi lain lahan yang belum ditutupi vegetasi di sekitar Air Strip Runway 2600 berpotensi akan mengalami erosi lahan, kemudian hasil erosi lahan ini akan terbawa oleh aliran air sehingga akan masuk ke saluran drainase yang akan menyebabkan sedimentasi pada saluran drainase tersebut, akhirnya akan berkurang efektifitas kinerja saluran drainase tersebut. Metode yang digunakan untuk memprediksi laju rata-rata erosi di area Air Strip Runway 2600 dengan memperhitungkan faktor erosivitas hujan, erodibilitas tanah, kemiringan lereng atau panjang lereng, pengelolaan tanaman dan konservasi tanah, yang masing masing tata guna lahan tersebut mengacu pada Masterplan Ultimate Bandara Depati Amir (PGK). Perhitungan dilakukan menggunakan persamaan USLE (Universal Soil Loss Equation) yang dikembangkan oleh Wischmeier dan Smith (1965, 1978), kemudian Sediment Delivery Ratio (SDR) dan Sediment Yield.Hasil penelitian ini, prediksi laju erosi permukaan pada area Air Strip Runway 2600 Bandara Depati Amir (PGK) tahun pertama yang mencapai 5,60 mm/tahun atau 100,76 Ton/Ha/tahun, laju erosi tahun kedua mencapai 3,38 mm/tahun atau 60,84 Ton/Ha/tahun dapat diklasifikasikan ke dalam kelas bahaya erosi sedang (kelas III) dan nilai SDR adalah sebesar 56,3%, nilai sediment yield (SR) pada tahun pertama sebesar 5.887,59 Ton/Tahun, pada tahun kedua ketika rumput pada area Air Strip telah tumbuh dengan sempurna terjadi penurunan hasil sediment yield yaitu nilai SR sebesar 3.554,85 Ton/Tahun.

Documenting Changes in the Natural Environment of Indianapolis-Marion County from European Settlement to the Present

2002 ◽  
Vol 20 (1) ◽  
pp. 37-46 ◽  
Author(s):  
R. C. Barr ◽  
B. E. Hall ◽  
J. S. Wilson ◽  
C. Souch ◽  
G. Lindsey ◽  
...  
Keyword(s):  
Natural Environment ◽  
Marion County ◽  
European Settlement

Asking More than Where: Developing a Site Contextual Model Based on Reconstructing past Environments

1997 ◽  
Vol 17 (4) ◽  
pp. 307-336
Author(s):  
Douglas S. Frink
Keyword(s):  
Native American ◽  
Phase I ◽  
Contextual Model ◽  
Model Based ◽  
European Settlement ◽  
Level Data ◽  
Limited Application ◽  
And Function ◽  
A Site ◽  
Phase Ii And Iii

Contract archaeology accounts for the majority of archaeological studies conducted in Vermont. As these studies serve the development community, the focus of investigation has been to identify and avoid sites, not to research and evaluate the information they contain. Native-American site locational models have limited application because they are based primarily on the landforms' proximity to water. The Archaeology Consulting Team is developing a contextual model based on reconstructing the pre-European settlement environment. Hypotheses comparing expected size and function of Native-American sites in different environments can be posed at the Phase I level of archaeological studies. Furthermore, with Phase I level data, these hypotheses can provide the framework for research designs at Phase II and III levels of archaeological study.

scholarly journals Amplified Impact of Climate Change on Fine-Sediment Delivery to a Subsiding Coast, Humboldt Bay, California

2021 ◽  
Author(s):  
Jennifer A. Curtis ◽  
Lorraine E. Flint ◽  
Michelle A. Stern ◽  
Jack Lewis ◽  
Randy D. Klein
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
Baseline Period ◽  
Climate Impacts ◽  
Sediment Supply ◽  
Balance Model ◽  
Climate Projections ◽  
Sediment Delivery ◽  
Beneficial Reuse ◽  
Coastal Margin

AbstractIn Humboldt Bay, tectonic subsidence exacerbates sea-level rise (SLR). To build surface elevations and to keep pace with SLR, the sediment demand created by subsidence and SLR must be balanced by an adequate sediment supply. This study used an ensemble of plausible future scenarios to predict potential climate change impacts on suspended-sediment discharge (Qss) from fluvial sources. Streamflow was simulated using a deterministic water-balance model, and Qss was computed using statistical sediment-transport models. Changes relative to a baseline period (1981–2010) were used to assess climate impacts. For local basins that discharge directly to the bay, the ensemble means projected increases in Qss of 27% for the mid-century (2040–2069) and 58% for the end-of-century (2070–2099). For the Eel River, a regional sediment source that discharges sediment-laden plumes to the coastal margin, the ensemble means projected increases in Qss of 53% for the mid-century and 99% for the end-of-century. Climate projections of increased precipitation and streamflow produced amplified increases in the regional sediment supply that may partially or wholly mitigate sediment demand caused by the combined effects of subsidence and SLR. This finding has important implications for coastal resiliency. Coastal regions with an increasing sediment supply may be more resilient to SLR. In a broader context, an increasing sediment supply from fluvial sources has global relevance for communities threatened by SLR that are increasingly building resiliency to SLR using sediment-based solutions that include regional sediment management, beneficial reuse strategies, and marsh restoration.

Notions of property: traditional land use and boundaries in the Deh Cho region

Polar Record ◽  
2012 ◽  
Vol 48 (3) ◽  
pp. 249-254 ◽  
Author(s):  
Carol J. Brown-Leonardi
Keyword(s):  
Cultural Practice ◽  
Ecological Sustainability ◽  
Economic Interests ◽  
Property Ownership ◽  
Property Relations ◽  
European Settlement ◽  
The Social ◽  
Consumer Interests ◽  
Insight Into ◽  
Traditional Land Use

ABSTRACTThe Deh Cho Dene have been negotiating territorial land since early European settlement. This paper argues that the changing needs of Deh Cho Dene society has changed their concept of property and this transformation has evolved with a responsibility to conserve cultural practice and ecological balance in Deh Cho Dene territorial lands. The article considers how the changing need of European society addresses property and ownership in the context of basic human rights and consumer interests. It uses the theories of Macpherson, Locke, and Marx to construct a model to understand the property relations that exist in the Deh Cho Dene region. Accordingly, the paper addresses oral narratives to give historical insight into the relations between neighbouring tribal groups and their understanding of territorial boundaries. An account of present day negotiations highlights the various initiatives taken to protect traditional interests and uphold historical claim to the territory. The negotiation of joint ventures and property ownership has evolved with concerns over ecological sustainability and the protection of a subsistence lifestyle, which is critical for the social and economic interests of Deh Cho Dene culture, and is closely connected to the land.

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