Quaternary uplift of the peruvian coast related to the subduction of the Nazca Ridge: 13.5 to 15.6 degrees south latitude

AbstractThe large preceramic site of Aspero, on the central Peruvian coast, was explored in the past by Uhle and by Willey and Corbett; however, these investigators did not recognize the presence of sizable artificial platform mounds or “corporate labor structures” at the site. In spite of its preceramic status, Aspero was a sedentary community, and the corporate labor structures suggest the beginnings of a complex, non-egalitarian society. The hypothesis is advanced that such a society was “pre-adapted” toward corporate labor activity and that this “pre-adaptation” expedited the rapid transference from a marine economy to an agricultural one at the close of the Cotton Preceramic period (about 2000-1800 B.C.).

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Bomolochus peruensis n. sp. (Copepoda: Bomolochidae), a parasite of sciaenid fishes from the Peruvian coast

Systematic Parasitology ◽

10.1007/bf00010136 ◽

1990 ◽

Vol 15 (3) ◽

pp. 203-209 ◽

Cited By ~ 1

Author(s):

José Luis Luque ◽

María Bruno

Keyword(s):

Peruvian Coast

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Multiple morphological abnormalities in a blue shark Prionace glauca (Linnaeus, 1758) embryo from the Peruvian coast, southeast Pacific

Latin American Journal of Aquatic Research ◽

10.3856/vol48-issue1-fulltext-2317 ◽

2020 ◽

Vol 48 (1) ◽

pp. 141-145

Author(s):

Keny Kanagusuku ◽

Miguel Romero ◽

Sergio Ramírez-Amaro

Keyword(s):

Cephalic Region ◽

Blue Shark ◽

Caudal Fin ◽

Prionace Glauca ◽

Morphological Abnormalities ◽

Peruvian Coast ◽

Southeast Pacific ◽

First Time

This study reports for the first time a case of multiple morphological abnormalities in a blue shark Prionace glauca embryo collected on the Peruvian coast, southeast Pacific. External exploration and radiograph picture showed duplicated parts in the cephalic region (mouths and eye sockets) and trunk anomalies (thoracic lordosis and rolled caudal fin). The duplicate face parts in a single head seen in the embryo, suggest a diprosopia anomaly.

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Inter-decadal variations of surface winds off Peruvian coast

10.5194/egusphere-egu21-12070 ◽

2021 ◽

Author(s):

Sadegh Yari ◽

Volker Mohrholz

Keyword(s):

Coastal Upwelling ◽

Marine Ecosystem ◽

Wind Forcing ◽

Trade Wind ◽

Positive Anomaly ◽

Peruvian Coast ◽

Wide Range ◽

Decadal Variations ◽

Interannual Fluctuations

The Peruvian upwelling system (PUS) is the most productive marine ecosystem among the Eastern Boundary upwelling Systems (EBUS). The trade wind system drives a nearly continuous upwelling which is subjected to variations on a wide range of times scales. The wind forced upwelling controls crucially the nutrient supply to the euphotic surface layer and thus, the overall productivity of the system.Using long term data from ERA5 (1979-2019) the wind forcing in the PUS was analyzed to obtain information about long term trends in the mean state and its variability.Beside the strong annual cycle, the wind forcing is dominated by interannual and a long term interdecadal oscillation.The interannual fluctuations with a period of 2-5 years are related to the known events of El Ni&#241;o and La Ni&#241;a. The wind anomaly shows a good correlation with Oceanic Ni&#241;o Index (ONI). Interdecadal variation of wind depict a main period of 15-20 years whit negative anomaly values from 1979 to 1996, and positive anomaly values for 1996-2014. These long term variations can be attributed to the Interdecadal Pacific Oscillations (IPO). The spatial distribution of wind stress along the Peruvian coast is not uniform. The highest values are observed in Lima-Marcona area (12&#186;-15.4&#186; S) while it decreases sharply southward and gradually northward. Additionally the coastal upwelling area is modulated locally by the coupling of wind and SST.

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Maritime Adaptations at Cerro Azul, Peru

Maritime Communities of the Ancient Andes ◽

10.5744/florida/9780813066141.003.0013 ◽

2020 ◽

pp. 351-365

Author(s):

Joyce Marcus ◽

Kent V. Flannery ◽

Jeffrey Sommer ◽

Robert G. Reynolds

Keyword(s):

20Th Century ◽

El Niño ◽

El Nino ◽

Late Intermediate Period ◽

Intermediate Period ◽

El Niño Event ◽

Peruvian Coast ◽

Maritime Adaptations ◽

El Niño Events ◽

El Nino Events

Chapter 13 discusses Late Intermediate Period (~1000–1400 cal AD) and 20th-century fishing at Cerro Azul, a large site in the Cañete Valley on the Peruvian coast south of Lima. The authors provide data on the effects of the 1982–83 El Niño event on the local fisheries and use these data to examine the Cerro Azul zooarchaeological assemblage for evidence of El Niño events; they did not find signs of El Niño although events occurred while the site was inhabited.

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