U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject "coasts" Remove constraint Subject: "coasts"
Start Over

Search

37,081  Search Results

« Previous | 1 - 20 of 37,081 |
Number of results to display per page

Search Results

1. Evaluating the influence of air pollution on solar radiation observations over the coastal region of Alicante (Southeastern Spain)

Author:
Igor Gómez; Sergio Molina; Juan José Galiana-Merino
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 633-643
ISSN:
1001-0742
Subject:
coasts,   etc   ; air; air pollution; capital; particulates; shortwave radiation; solar radiation; wind; winter; China; Spain;     Show all 11 Subjects
Abstract:
... The present study evaluates ground-based downward surface shortwave radiation (Rₛ) over the coastal region of Alicante (Southeastern Spain). Hourly measurements collected over the eleven-year period 2010-2020 are used. Two weather stations located over the region capital, Alicante, have been selected as representative of urban and suburban typologies. Two additional weather stations far from the c ...
DOI:
10.1016/j.jes.2022.05.004

2. Tail‐dependent spatial synchrony arises from nonlinear driver–response relationships

Author:
Jonathan A. Walter; Max C. N. Castorani; Tom W. Bell; Lawrence W. Sheppard; Kyle C. Cavanaugh; Daniel C. Reuman
Source:
Ecology letters 2022 v.25 no.5 pp. 1189-1201
ISSN:
1461-023X
Subject:
coasts,   etc   ; macroalgae; California;     Show all 3 Subjects
Abstract:
... Spatial synchrony may be tail‐dependent, that is, stronger when populations are abundant than scarce, or vice‐versa. Here, ‘tail‐dependent’ follows from distributions having a lower tail consisting of relatively low values and an upper tail of relatively high values. We present a general theory of how the distribution and correlation structure of an environmental driver translates into tail‐depend ...
DOI:
10.1111/ele.13991

3. Episodic movement of a submarine landslide complex driven by dynamic loading during earthquakes

Author:
J.M. Carey; J.J. Mountjoy; G.J. Crutchley; D.N. Petley; C.F. Holden; Y. Kaneko; K. Huhn
Source:
Geomorphology 2022 v.408 pp. 108247
ISSN:
0169-555X
Subject:
coasts,   etc   ; landslides; liquefaction; New Zealand;     Show all 4 Subjects
Abstract:
... Although subaqueous slopes on active continental margins are subject to a variety of failure styles, their movement mechanisms during earthquakes remain poorly constrained. A primary explanation is that few submarine landslides have been directly sampled for detailed investigation. We have conducted a series of dynamic shear experiments on samples recovered from the base of the Tuaheni Landslide C ...
DOI:
10.1016/j.geomorph.2022.108247

4. Mesoscale assessment of sedentary coastal fish density using vertical underwater cameras

Author:
Guillermo Follana-Berná; Pablo Arechavala-Lopez; Eduardo Ramirez-Romero; Elka Koleva; Amalia Grau; Miquel Palmer
Source:
Fisheries research 2022 v.253 pp. 106362
ISSN:
0165-7836
Subject:
coasts,   etc   ; Serranus; fish; habitats; research;     Show all 5 Subjects
Abstract:
... Accurate and precise monitoring of the absolute density (i.e., number of fish per area or volume unit) of exploited fish stocks would be strongly advisable for deriving stock status and for designing proper management plans. Moreover, monitoring should be achieved at relevant (i.e., sufficiently large) temporal and spatial scales. This objective is particularly challenging for data-poor fisheries, ...
DOI:
10.1016/j.fishres.2022.106362

5. Seasonal and Annual Variations in the Scale Circulus Spacings of Pink Salmon, Oncorhynchus gorbuscha (Walbaum, 1792) (Salmonidae)

Author:
A. M. Kaev; L. V. Romasenko; D. A. Kaev
Source:
Russian journal of marine biology 2022 v.48 no.2 pp. 91-100
ISSN:
1063-0740
Subject:
coasts,   etc   ; Oncorhynchus gorbuscha; Russia; fish;     Show all 4 Subjects
Abstract:
... Specimens of pink salmon Oncorhynchus gorbuscha (Walbaum, 1792) caught in nearshore waters and rivers of the southeastern coast of Sakhalin Island in 2005–2020 are used as the material for study. The average number of circuli counted on their scales was 36.3 (SD = 2.43), with a range from 33.6 to 38.1 in different year classes. To compare the intercirculus spaces on scales from different fish, all ...
DOI:
10.1134/S1063074022020067

6. Composition, sources, abundance and seasonality of Marine Litter in the Çakalburnu lagoon coast of Aegean Sea

Author:
Alperen ERTAŞ; Victor Vasques Ribeiro; Ítalo Braga Castro; Ferah SAYIM
Source:
Journal of coastal conservation 2022 v.26 no.2 pp. 8
ISSN:
1400-0350
Subject:
coasts,   etc   ; marine debris; plastics; Aegean Sea;     Show all 4 Subjects
Abstract:
... The Aegean Sea is one of the most contaminated by marine litter (ML) in the World. In this study, the Turkish Aegean Region was evaluated in light of the sources, abundance and composition of ML along Çakalburnu Lagoon coast. Macroscopic ML with > 3 cm was collected and separated into composition and sources categories. ML abundance was calculated by its density in items/m² (Mean ± SD). Beach clea ...
DOI:
10.1007/s11852-022-00856-5

7. Impacts of illegal fishing in the inland waters of the State of Santa Catarina –Brazil

Author:
Márcia Maria Constantino; Anelise Leal Vieira Cubas; Guilherme Silvy; Fernando Magogada; Elisa Helena Siegel Moecke
Source:
Marine pollution bulletin 2022 v.180 pp. 113746
ISSN:
0025-326X
Subject:
coasts,   etc   ; fish; marine pollution; police; Brazil;     Show all 5 Subjects
Abstract:
... Fish stocks are being severely depleted, marine habitats are threatened and marine pollution is on the rise due to discarded fishing gear. This equipment is generally from illegal, unreported and unregulated fishing, leading to incidental fishing and sometimes ghost fishing. In this study, data obtained from reports produced by the Environmental Military Police in Santa Catarina, Brazil, on gill n ...
DOI:
10.1016/j.marpolbul.2022.113746

8. New records of the red gum lerp psyllid Glycaspis brimblecombei Moore, 1964 (Hemiptera: Aphalaridae) in Italy including the first records for the Adriatic coast

Author:
Fabio Cianferoni; Filippo Ceccolini
Source:
Bulletin OEPP 2022 v.52 no.1 pp. 185-189
ISSN:
0250-8052
Subject:
coasts,   etc   ; Aphalaridae; Glycaspis brimblecombei; Internet; Italy;     Show all 5 Subjects
Abstract:
... The invasive Australian pest Glycaspis brimblecombei Moore, 1964 is recorded for the first time in Molise, Liguria and Abruzzo, respectively, based on sampling by the authors in 2014 and observations (photographs) retrieved from the internet which were taken in 2018 and 2021. The records from Molise and Abruzzo are the first ones on the Adriatic side of Italy, east of the Apennines. Furthermore, n ...
DOI:
10.1111/epp.12810

9. The spatial characteristics of embodied carbon emission flow in Chinese provinces: a network-based perspective

Author:
Jinzhao Song; Xiangxiang Hu; Xiaoping Wang; Wenjun Yuan; Tian Wang
Source:
Environmental science and pollution research 2022 v.29 no.23 pp. 34955-34973
ISSN:
0944-1344
Subject:
coasts,   etc   ; carbon; models; pollution; research; China;     Show all 6 Subjects
Abstract:
... Combining the multi-regional input–output model with complex network technology, based on the provincial scale, this paper systematically describes the characteristics of the spatial network flow and its changing track of embodied carbon emissions among provinces in China from three dimensions of network structure, flow distribution characteristics, and spatial flow characteristics. Furthermore, t ...
DOI:
10.1007/s11356-022-18593-5

10. Zirconium-REE mineralization characteristic in Sakju and Ryongpho intrusions of Sakju Complex distributed in the western area, DPR Korea

Author:
Hyon－Chol Won; Po－Hyon Hwang
Source:
Applied geochemistry 2022 v.142 pp. 105324
ISSN:
0883-2927
Subject:
coasts,   etc   ; feldspar; geochemistry; mineralization; Korean Peninsula;     Show all 5 Subjects
Abstract:
... Alkali intrusions of Sakju Complex distributed in the western area, DPR Korea were formed in mid-Proterozoic era. The Zirconium-REE mineralization occurs in Sakju and Ryongpho intrusions of Sakju Complex. Zr and Hf are the typical lithophile elements and always exist together under the closed relation to alkali and acid igneous rock. In our country, Zr and Hf mineral resources are exploited in the ...
DOI:
10.1016/j.apgeochem.2022.105324

11. A New Adaptive Remote Sensing Extraction Algorithm for Complex Muddy Coast Waterline

Author:
Ziheng Yang; Lihua Wang; Weiwei Sun; Weixin Xu; Bo Tian; Yunxuan Zhou; Gang Yang; Chao Chen
Source:
Remote Sensing 2022 v.14 no.4 pp. -
ISSN:
2072-4292
Subject:
coasts,   etc   ; algorithms; equations; humans; land cover; statistics;     Show all 6 Subjects
Abstract:
... Coastline is an important geographical element of the boundary between ocean and land. Due to the impact of the ocean-land interactions at multiple temporal-spatial scales and the intensified human activities, the waterline of muddy coast is undergoing long-term and continuous dynamic changes. Using traditional remote sensing-based waterline extraction methods, it is difficult to achieve ideal res ...
DOI:
10.3390/rs14040861

12. Analysing the trend of beach–dune erosion in Digha coastal tract in response to nearshore wave processes and coastal protection structures

Author:
Swapan Paul; Swetangee Chowdhury; Subhamita Chaudhuri
Source:
Regional studies in marine science 2022 v.52 pp. 102243
ISSN:
2352-4855
Subject:
coasts,   etc   ; climate; energy; marine science; sediments; India;     Show all 6 Subjects
Abstract:
... Digha is one of the largest sea resorts in eastern India, facing a long history of erosion and has been engineered extensively since 1970s. It extends for 5.45 km along the Medinipur coast, which can be divided into three sectors viz. New Digha, Old Digha and Gangadharpur based on the beach character. The current study aims to identify the erosion–accretion trend of the coast and link it with the ...
DOI:
10.1016/j.rsma.2022.102243

13. Can Managed Realignment Buffer Extreme Surges? The Relationship Between Marsh Width, Vegetation Cover and Surge Attenuation

Author:
Joshua Kiesel; Leigh R. MacPherson; Mark Schuerch; Athanasios T. Vafeidis
Source:
Estuaries and coasts 2022 v.45 no.2 pp. 345-362
ISSN:
1559-2723
Subject:
coasts,   etc   ; hydrologic models; sea level; vegetation cover;     Show all 4 Subjects
Abstract:
... Managed realignment (MR) involves the landward relocation of sea defences to foster the (re)creation of coastal wetlands and achieve nature-based coastal protection. The wider application of MR is impeded by knowledge gaps related to lacking data on its effectiveness under extreme surges and the role of changes in vegetation cover, for example due to sea-level rise. We employ a calibrated and vali ...
DOI:
10.1007/s12237-021-00984-5

14. Characteristics of catch losses in stow nets with finless porpoise excluder devices and a strategy to reduce them

Author:
Gun-Ho Lee; Dae-Ho Song; Hyun-Young Kim
Source:
Regional studies in marine science 2022 v.50 pp. 102147
ISSN:
2352-4855
Subject:
coasts,   etc   ; Sepiidae; bycatch; marine science; Korean Peninsula;     Show all 5 Subjects
Abstract:
... Finless porpoise excluder devices have been developed to prevent bycatch of finless porpoise by stow net in Korea; however, fishermen are hesitant to use them owing to concerns of associated catch losses. To promote their use, we aimed to identify the characteristics of catch losses associated with finless porpoise excluder devices used along the Korean west coast and suggest a strategy to reduce ...
DOI:
10.1016/j.rsma.2021.102147

15. Characterization of agar extracted from Gracilaria species collected along Tanzanian coast

Author:
Said A.H. Vuai
Source:
Heliyon 2022 v.8 no.2 pp. e09002
ISSN:
2405-8440
Subject:
coasts,   etc   ; agar; alkali treatment; gel strength; Zanzibar;     Show all 5 Subjects
Abstract:
... The study was conducted to investigate the effect of spatial variation, alkali treatment and the volume of extractant on yield and gel strength of agar for three Gracilaria species (G. salicornia, G. edulis and G. corticata) collected from the Tanzanian coast (Dar es Salaam, Tanga and Zanzibar). Treated and untreated G. corticata showed the highest yield (27 ± 0.7 % and 26.2 ± 1.3 % for treated an ...
DOI:
10.1016/j.heliyon.2022.e09002

16. Clock hour correction effect on extreme value analysis of rainfall on Western Coast of India

Author:
Saha Dauji
Source:
ISH journal of hydraulic engineering 2022 v.28 no.S1 pp. 390-402
ISSN:
2164-3040
Subject:
coasts,   etc   ; meteorological data; monsoon season; rain; India;     Show all 5 Subjects
Abstract:
... Increasing trend of number and intensity of the extreme precipitation events in India has been reported in literature. Majority of the Indian weather stations have historical rainfall data recorded at a fixed time (0830 hours) of the day, which could be a limitation for correct estimation of extremes. To overcome this, clock hour correction factor (CHCF) in extreme value analysis (EVA) assumes imp ...
DOI:
10.1080/09715010.2019.1687338

17. Coast type based accuracy assessment for coastline extraction from satellite image with machine learning classifiers

Author:
Osman İsa Çelik; Cem Gazioğlu
Source:
The Egyptian Journal of Remote Sensing and Space Sciences (Online) 2022 v.25 no.1 pp. 289-299
ISSN:
1110-9823
Subject:
coasts,   etc   ; bedrock; remote sensing; support vector machines;     Show all 4 Subjects
Abstract:
... Machine learning (ML) classifiers provide convenience and accuracy in coastline extraction compared to traditional methods and image processing techniques. In literature, the studies about coastline extraction with machine learning classifiers are not focused adequately on the coast types that affect the process. To eliminate this gap, machine learning classifiers were examined in terms of their a ...
DOI:
10.1016/j.ejrs.2022.01.010

18. Estimation of rip density on intermediate beaches using an extreme learning machine model

Author:
A. Valipour; H. Shirgahi
Source:
Regional studies in marine science 2022 v.52 pp. 102332
ISSN:
2352-4855
Subject:
coasts,   etc   ; data collection; marine science; neural networks;     Show all 4 Subjects
Abstract:
... Rip currents are one of the most well-known and risky flows in coastal areas, and given the limitations and difficulties in field data collection, predicting the varied behavior of these flows is of particular importance. In this study, based on the design of the intermediate beaches, the wave and bed parameters in the coastal zone were extracted as dimensionless ratios of Froude number, wave heig ...
DOI:
10.1016/j.rsma.2022.102332

19. Four new crab records (Brachyura: Podotremata: Dromiidae; Heterotremata: Dorippidae, Parthenopidae, Portunidae) from the Iraqi coast

Author:
Amaal Gh. Yasser; Murtada D. Naser; Salman D. Salman; Dawood S. Abdullah; Abdulhussein H. Ghazi; Aqeel A. A. Alwaeli
Source:
Crustaceana 2022 v.95 no.3 pp. 337-343
ISSN:
0011-216X
Subject:
coasts,   etc   ; Charybdis; crabs; Iraq; Kuwait; Persian Gulf;     Show all 6 Subjects
Abstract:
... An old collection of brachyuran specimens from the Iraqi coast, collected in the last century, was examined. This resulted in four new records from the northwest Persian-Arabian Gulf that could be recognized: the podotreme Lauridromia dehaani (Rathbun, 1923), and the heterotremes Dorippoides nudipes Manning & Holthuis, 1986, Enoplolambrus carenatus (H. Milne Edwards, 1834), and Charybdis (Archias) ...
DOI:
10.1163/15685403-bja10191

20. Internal Geometric Quality Improvement of Optical Remote Sensing Satellite Images with Image Reorientation

Author:
Jinshan Cao; Nan Zhou; Haixing Shang; Zhiwei Ye; Zhiqi Zhang
Source:
Remote Sensing 2022 v.14 no.3 pp. -
ISSN:
2072-4292
Subject:
coasts,   etc   ; cameras; geometry; models; panchromatic imagery; satellites;     Show all 6 Subjects
Abstract:
... When the in-orbit geometric calibration of optical satellite cameras is not performed in a precise or timely manner, optical remote sensing satellite images (ORSSIs) are produced with inaccurate camera parameters. The internal orientation (IO) biases of ORSSIs caused by inaccurate camera parameters show a discontinuous distorted characteristic and cannot be compensated by a simple orientation mode ...
DOI:
10.3390/rs14030471