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Journal articles on the topic 'Puerto Rico Trench'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Lemenkova, Polina. "Geomorphology of the Puerto Rico Trench and Cayman Trough in the Context of the Geological Evolution of the Caribbean Sea." Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia 75 (November 24, 2020): 115–41. https://doi.org/10.17951/b.2020.75.115-141.

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This paper concerns the Caribbean Sea submarine geomorphology and bathymetry and especially the Puerto Rico Trench and the Cayman Trough, using thematic mapping, geomorphological modelling and statistical analysis. The technical tools include Generic Mapping Tools (GMT) cartographic scripting toolset. The data include GEBCO digital bathymetric model in grid format, geopotential model of the Earth’s gravity field EGM2008, marine free-air Faye gravity anomalies from a combined GEOS3/SEASAT/GEOSAT altimeter data set, sediment thickness from the GlobSed 5-arc-minute grid model and vector lay

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2

McCann, William R. "On the earthquake hazards of Puerto Rico and the Virgin Islands." Bulletin of the Seismological Society of America 75, no. 1 (1985): 251–62. http://dx.doi.org/10.1785/bssa0750010251.

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Abstract Puerto Rico and the Virgin Islands are located near the northeastern corner of the Caribbean seismic zone. Numerous large earthquakes have struck these islands, some with disastrous results. The 400-yr-long earthquake record of Puerto Rico describes shocks affecting nearly all portions of the island. The last destructive shock, in 1918 (7.5 MS), did not occur along the main seismic zone, but rather on an intraplate fault near Mona Canyon off the northwest coast. A possible great earthquake in 1787 (8 to 8.25 MS) appears to have occurred along the main seismic zone near the Puerto Rico

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3

van Haren, Hans, and Louis Gostiaux. "Convective mixing by internal waves in the Puerto Rico Trench." Journal of Marine Research 74, no. 3 (2016): 161–73. http://dx.doi.org/10.1357/002224016819594809.

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4

Kaiser, Stefanie, Bente Stransky, Robert M. Jennings, Terue Cristina Kihara, and Saskia Brix. "Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench." Zootaxa 5293, no. 3 (2023): 401–34. https://doi.org/10.11646/zootaxa.5293.3.1.

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Kaiser, Stefanie, Stransky, Bente, Jennings, Robert M., Kihara, Terue Cristina, Brix, Saskia (2023): Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench. Zootaxa 5293 (3): 401-434, DOI: 10.11646/zootaxa.5293.3.1, URL: http://dx.doi.org/10.11646/zootaxa.5293.3.1

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5

Devey, C. W., N. Augustin, A. Brandt, et al. "Habitat characterization of the Vema Fracture Zone and Puerto Rico Trench." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 7–20. http://dx.doi.org/10.1016/j.dsr2.2018.02.003.

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6

Meighan, Hallie E., Jay Pulliam, Uri ten Brink, and Alberto M. López-Venegas. "Seismic evidence for a slab tear at the Puerto Rico Trench." Journal of Geophysical Research: Solid Earth 118, no. 6 (2013): 2915–23. http://dx.doi.org/10.1002/jgrb.50227.

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7

KAISER, STEFANIE, BENTE STRANSKY, ROBERT M. JENNINGS, TERUE CRISTINA KIHARA, and SASKIA BRIX. "Combining morphological and mitochondrial DNA data to describe a new species of Austroniscus Vanhöffen, 1914 (Isopoda, Janiroidea, Nannoniscidae) linking abyssal and hadal depths of the Puerto Rico Trench." Zootaxa 5293, no. 3 (2023): 401–34. http://dx.doi.org/10.11646/zootaxa.5293.3.1.

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Hadal trenches are perceived as a unique deep-sea ecosystem with fundamentally different communities compared to the nearby abyss. So far, however, scarce information exists about how populations are genetically linked within a trench and about mechanisms for species divergence. The present study presents the morphological and molecular-genetic characterization and description of a new nannoniscid species within the genus Austroniscus Vanhöffen, 1914 obtained from abyssal and hadal depths of the Puerto Rico Trench, NW Atlantic. Samples were collected as part of the Vema-TRANSIT expedition onbo

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8

León-Zayas, Rosa, Mark Novotny, Sheila Podell, et al. "Single Cells within the Puerto Rico Trench Suggest Hadal Adaptation of Microbial Lineages." Applied and Environmental Microbiology 81, no. 24 (2015): 8265–76. http://dx.doi.org/10.1128/aem.01659-15.

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ABSTRACTHadal ecosystems are found at a depth of 6,000 m below sea level and below, occupying less than 1% of the total area of the ocean. The microbial communities and metabolic potential in these ecosystems are largely uncharacterized. Here, we present four single amplified genomes (SAGs) obtained from 8,219 m below the sea surface within the hadal ecosystem of the Puerto Rico Trench (PRT). These SAGs are derived from members of deep-sea clades, including theThaumarchaeotaand SAR11 clade, and two are related to previously isolated piezophilic (high-pressure-adapted) microorganisms. In order

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9

MÜHLENHARDT-SIEGEL, UTE. "The Cumacea (Crustacea: Peracarida) from a North Atlantic Transect with RV “Sonne” with the description of ten new species." Zootaxa 4572, no. 1 (2019): 1. http://dx.doi.org/10.11646/zootaxa.4572.1.1.

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In total 36 species were identified, from the abyssal of the Vema Fracture Zone in the tropical northern Atlantic and the Puerto Rico Trench, including ten new species. The new species are Chalarostylis erebos n. sp., Chalarostylis nyx n. sp. (Lampropidae), Bathycuma sonneae n. sp. (Bodotriidae), Leucon (Crymoleucn) fracturensis n. sp., Leucon (Crymoleucon) marinae n. sp., Leucon (Macrauloleucon) longiserratus n. sp., Leucon (Macrauloleucon) breviserratus n. sp. (Leuconidae), Atlantistylis paraborealis n.sp., Leptostylis abyssalis n. sp. and Leptostylis danieli n. sp. (Diastylidae).

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10

Scanlon, Kathryn M., and Douglas G. Masson. "Fe−Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench." Geo-Marine Letters 12, no. 4 (1992): 208–13. http://dx.doi.org/10.1007/bf02091840.

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11

Ventura-Valentín, Wilnelly, and Michael R. Brudzinski. "Characterization of Swarm and Mainshock–Aftershock Behavior in Puerto Rico." Seismological Research Letters 93, no. 2A (2022): 641–52. http://dx.doi.org/10.1785/0220210329.

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Abstract The recent Indios, Puerto Rico earthquake sequence has drawn attention, as the increased seismicity rate in this area was unprecedented. The sequence began on 28 December 2019, caused a 6.4 magnitude earthquake on 7 January 2020, and remained active over a year later. This sequence fits the nominal definition of an earthquake swarm in that it had an abrupt onset, a sustained high rate of seismicity without a clear triggering mainshock or evidence for Omori decay, and a lack of adherence to Bath’s law. However, the sequence also had several prominent mainshock–aftershock (MS–AS) sequen

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12

Klein, Frieder, Horst R. Marschall, Samuel A. Bowring, Susan E. Humphris, and Gregory Horning. "Mid-ocean Ridge Serpentinite in the Puerto Rico Trench: from Seafloor Spreading to Subduction." Journal of Petrology 58, no. 9 (2017): 1729–54. http://dx.doi.org/10.1093/petrology/egx071.

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13

Richardson, Michael D., Kevin B. Briggs, Frederick A. Bowles, and John H. Tietjen. "A depauperate benthic assemblage from the nutrient-poor sediments of the Puerto Rico Trench." Deep Sea Research Part I: Oceanographic Research Papers 42, no. 3 (1995): 351–64. http://dx.doi.org/10.1016/0967-0637(95)00007-s.

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14

Brink, Uri ten, William Danforth, Christopher Polloni, et al. "New seafloor map of the Puerto Rico trench helps assess earthquake and tsunami hazards." Eos, Transactions American Geophysical Union 85, no. 37 (2004): 349. http://dx.doi.org/10.1029/2004eo370001.

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15

Meighan, Hallie E., and Jay Pulliam. "Seismic anisotropy beneath the northeastern Caribbean: implications for the subducting North American lithosphere." Bulletin de la Société Géologique de France 184, no. 1-2 (2013): 67–76. http://dx.doi.org/10.2113/gssgfbull.184.1-2.67.

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Abstract Active plate boundaries in the Caribbean form a complex tectonic environment that includes transform and subduction zones. The Caribbean-North American plate boundary is one such active margin, where subduction transitions from arc- to oblique-type off the northeast coast of Puerto Rico. Understanding mantle flow in this region will not only help determine the nature of tectonic activity and mantle dynamics that control these margins, but will also aid our understanding of the fate of subducting lithosphere. The existence of tears, windows, and gaps in subducting slabs has been propos

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16

van Haren, Hans. "Ship motion effects in CTD-data from weakly stratified waters of the Puerto Rico trench." Deep Sea Research Part I: Oceanographic Research Papers 105 (November 2015): 19–25. http://dx.doi.org/10.1016/j.dsr.2015.08.002.

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17

Tietjen, John H. "Ecology of deep-sea nematodes from the Puerto Rico trench area and Hatteras Abyssal plain." Deep Sea Research Part A. Oceanographic Research Papers 36, no. 10 (1989): 1579–94. http://dx.doi.org/10.1016/0198-0149(89)90059-9.

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18

Jamieson, Alan J., Heather A. Stewart, and Paul-Henry Nargeolet. "Exploration of the Puerto Rico Trench in the mid-twentieth century: Today’s significance and relevance." Endeavour 44, no. 1-2 (2020): 100719. http://dx.doi.org/10.1016/j.endeavour.2020.100719.

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19

Hasmukh Kumar, H. K. Mittal, R. S. Singh, R. C. Purohit, and P. K. Singh. "Application of Remote Sensing and GIS in Planning of Soil and Water Conservation Measures." Journal of Agricultural Engineering (India) 44, no. 1 (2007): 79–81. http://dx.doi.org/10.52151/jae2007441.1245.

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Development programmes for optimum utilization of natural resources are now increasingly planned on watershed basis. Proper planning and management of a watershed require detailed data viz. hydrologic behaviour of watershed, slopt;, rainfall pattern, land capability classification, land use etc., which govern the amount of runoff and soil loss produced by rainfall. Remote sensing and GIS techniques can be used successfully for the integration and analysis of above properties. In the present study remote sensing data are used for land information whereas GIS has been used for the integration of

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20

Klein, Frieder, Horst R. Marschall, Samuel A. Bowring, Susan E. Humphris, and Gregory Horning. "Corrigendum to: ‘Mid-ocean Ridge Serpentinite in the Puerto Rico Trench: from Seafloor Spreading to Subduction’." Journal of Petrology 60, no. 12 (2019): 2547. http://dx.doi.org/10.1093/petrology/egz059.

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21

Schmidt, Wilford E., and Eric Siegel. "Free descent and on bottom ADCM measurements in the Puerto Rico Trench, 19.77°N, 67.40°W." Deep Sea Research Part I: Oceanographic Research Papers 58, no. 9 (2011): 970–77. http://dx.doi.org/10.1016/j.dsr.2011.06.005.

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22

Seibert, Chloé, Christian Beck, Nathalie Feuillet, et al. "Late Pleistocene charcoal-rich sediments in the Puerto Rico Trench, possible remnants of gigantic wildfires in North-Eastern South America." Palaeogeography, Palaeoclimatology, Palaeoecology 655 (December 2024): 112497. http://dx.doi.org/10.1016/j.palaeo.2024.112497.

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23

Muszala, S. P., N. R. Grindlay, and R. T. Bird. "Three-dimensional Euler deconvolution and tectonic interpretation of marine magnetic anomaly data in the Puerto Rico Trench." Journal of Geophysical Research: Solid Earth 104, B12 (1999): 29175–87. http://dx.doi.org/10.1029/1999jb900233.

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24

BRÖKELAND, WIEBKE. "Description of four new species from the Haploniscus unicornis Menzies, 1956 complex (Isopoda: Asellota: Haploniscidae)." Zootaxa 2536, no. 1 (2010): 1. http://dx.doi.org/10.11646/zootaxa.2536.1.1.

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Based on the adult males the four species Haploniscus bihastatus n. sp., H. monoceros n. sp., H. machairis n. sp. and H. angolensis n. sp. are described from the deep sea of the Southeast Atlantic. These belong to a species complex, which also includes H. unicornis Menzies from the Puerto Rico Trench and H. aduncus Lincoln from the Iceland Basin and shares several characters with species from the genus Mastigoniscus Lincoln. While males of the species complex can be reasonably well distinguished by their habitus and pleopods 1 and 2, the discrimination of female specimens is hampered by the pr

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25

Linse, Katrin, and Enrico Schwabe. "Diversity of macrofaunal Mollusca of the abyssal Vema Fracture Zone and hadal Puerto Rico Trench, Tropical North Atlantic." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 45–53. http://dx.doi.org/10.1016/j.dsr2.2017.02.001.

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26

Brandt, A., I. Frutos, S. Bober, et al. "Composition of abyssal macrofauna along the Vema Fracture Zone and the hadal Puerto Rico Trench, northern tropical Atlantic." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 35–44. http://dx.doi.org/10.1016/j.dsr2.2017.07.014.

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27

Holzer, Thomas L., Charles Scawthorn, and Christopher Rojahn. "Coordinating NEHRP Post-Earthquake Investigations—Exercising the Plan." Earthquake Spectra 21, no. 4 (2005): 1043–62. http://dx.doi.org/10.1193/1.2087707.

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Three exercises of The Plan to Coordinate NEHRP Post-Earthquake Investigations were developed and implemented in late 2003 and early 2004 in order to test the Plan itself via realistic scenarios, and for the NEHRP agencies to learn how to coordinate post-earthquake investigations. The exercises were selected to cover a range of seismic activity and consequences, and were based on scenario events: (1) a Hayward Fault Mw 7 event without foreshocks; (2) a New Madrid seismic zone Mw 7 event with foreshocks, and (3) a Puerto Rico Mw 8 subduction event on the Puerto Rican Trench accompanied by a tsu

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28

van Haren, Hans. "AABW-transport variation and its effect on internal wave motions between top and bottom of the Puerto Rico Trench." Journal of Marine Research 75, no. 4 (2017): 507–29. http://dx.doi.org/10.1357/002224017821836716.

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29

Tietjen, John H., Jody W. Deming, Gilbert T. Rowe, Stephen Macko, and Richard J. Wilke. "Meiobenthos of the hatteras abyssal plain and Puerto Rico trench: abundance, biomass and associations with bacteria and particulate fluxes." Deep Sea Research Part A. Oceanographic Research Papers 36, no. 10 (1989): 1567–77. http://dx.doi.org/10.1016/0198-0149(89)90058-7.

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30

Cao, Yi, Roger A. Chastain, Emiley A. Eloe, Yuichi Nogi, Chiaki Kato, and Douglas H. Bartlett. "Novel Psychropiezophilic Oceanospirillales Species Profundimonas piezophila gen. nov., sp. nov., Isolated from the Deep-Sea Environment of the Puerto Rico Trench." Applied and Environmental Microbiology 80, no. 1 (2013): 54–60. http://dx.doi.org/10.1128/aem.02288-13.

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ABSTRACTThe diversity of deep-sea high-pressure-adapted (piezophilic) microbes in isolated monoculture remains low. In this study, a novel obligately psychropiezophilic bacterium was isolated from seawater collected from the Puerto Rico Trench at a depth of ∼6,000 m. This isolate, designated YC-1, grew best in a nutrient-rich marine medium, with an optimal growth hydrostatic pressure of 50 MPa (range, 20 to 70 MPa) at 8°C. Under these conditions, the maximum growth rate was extremely slow, 0.017 h−1, and the maximum yield was 3.51 × 107cells ml−1. Cell size and shape changed with pressure, shi

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31

Grilli, S. T., S. Dubosq, N. Pophet, Y. Pérignon, J. T. Kirby, and F. Shi. "Numerical simulation and first-order hazard analysis of large co-seismic tsunamis generated in the Puerto Rico trench: near-field impact on the North shore of Puerto Rico and far-field impact on the US East Coast." Natural Hazards and Earth System Sciences 10, no. 10 (2010): 2109–25. http://dx.doi.org/10.5194/nhess-10-2109-2010.

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Abstract. We perform numerical simulations of the coastal impact of large co-seismic tsunamis, initiated in the Puerto Rican trench, both in far-field areas along the upper US East coast (and other Caribbean islands), and in more detail in the near-field, along the Puerto Rico North Shore (PRNS). We first model a magnitude 9.1 extreme co-seismic source and then a smaller 8.7 magnitude source, which approximately correspond to 600 and 200 year return periods, respectively. In both cases, tsunami generation and propagation (both near- and far-field) are first performed in a coarse 2′ basin scale

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32

George, Robert Y. "Storthyngura torbeni, A New Species Of Hadal Isopod From The Puerto rico Trench And An Hypothesis On Its Origin (Crustacea, Eurycopidae)." Proceedings of the Biological Society of Washington 100 (June 6, 1987): 681–86. https://doi.org/10.5281/zenodo.13653951.

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33

Schmidt, Christina, Lidia Lins, and Angelika Brandt. "Harpacticoida (Crustacea, Copepoda) across a longitudinal transect of the Vema Fracture Zone and along a depth gradient in the Puerto Rico trench." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 236–50. http://dx.doi.org/10.1016/j.dsr2.2017.12.024.

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34

Baird, Bruce H., and David C. White. "Biomass and community structure of the abyssal microbiota determined from the ester-linked phospholipids recovered from Venezuela Basin and Puerto Rico Trench sediments." Marine Geology 68, no. 1-4 (1985): 217–31. http://dx.doi.org/10.1016/0025-3227(85)90013-1.

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35

Kniesz, Katharina, Angelika Brandt, and Torben Riehl. "Peritrich epibionts on the hadal isopod species Macrostylis marionae n. sp. from the Puerto Rico Trench used as indicator for sex-specific behaviour." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 105–29. http://dx.doi.org/10.1016/j.dsr2.2017.10.007.

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36

Riehl, Torben, Stefanie Kaiser, and Angelika Brandt. "Vema-TRANSIT – An interdisciplinary study on the bathymetry of the Vema‐Fracture Zone and Puerto Rico Trench as well as abyssal Atlantic biodiversity." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 1–6. http://dx.doi.org/10.1016/j.dsr2.2018.01.007.

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37

Jamieson, Alan J., Thomas D. Linley, Heather A. Stewart, Paul-Henry Nargeolet, and Victor Vescovo. "Revisiting the 1964 Archimède bathyscaphe dive to 7300 m in the Puerto Rico trench, abundance of an elasipodid holothurian Peniagone sp. and a resolution to the identity of the ‘Puerto Rican snailfish’." Deep Sea Research Part I: Oceanographic Research Papers 162 (August 2020): 103336. http://dx.doi.org/10.1016/j.dsr.2020.103336.

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38

Schmidt, Christina, Kaibil Escobar Wolf, Lidia Lins, Pedro Martínez Arbizu, and Angelika Brandt. "Meiofauna abundance and community patterns along a transatlantic transect in the Vema Fracture Zone and in the hadal zone of the Puerto Rico trench." Deep Sea Research Part II: Topical Studies in Oceanography 148 (February 2018): 223–35. http://dx.doi.org/10.1016/j.dsr2.2017.12.021.

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39

ten Brink, Uri S., and Eric L. Geist. "Earthquake Recurrence Estimates for Northern Caribbean Faults from Combinatorial Optimization." Seismic Record 5, no. 1 (2025): 44–54. https://doi.org/10.1785/0320240034.

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Abstract We use combinatorial optimization to find the optimal spatial distribution of random samples of earthquakes (≥6.5) that minimize the misfit in target slip rates for all faults in the northeast Caribbean, and we derive magnitude–frequency relationships with uncertainties for these faults. Slip rates for many faults are derived from geodetic block models, not direct measurements, because of their underwater locations. Predicted recurrence rates for earthquakes on the East Hispaniola and Puerto Rico trench faults are 220–450 yr for moment magnitude (M) 7 and 3000–5000 yr for M 8, with th

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Atwater, B. F., Z. Fuentes, R. B. Halley, U. S. Ten Brink, and M. P. Tuttle. "Effects of 2010 Hurricane Earl amidst geologic evidence for greater overwash at Anegada, British Virgin Islands." Advances in Geosciences 38 (March 7, 2014): 21–30. http://dx.doi.org/10.5194/adgeo-38-21-2014.

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Abstract. A post-hurricane survey of a Caribbean island affords comparisons with geologic evidence for greater overwash at the same place. This comparison, though of limited application to other places, helps calibrate coastal geology for assessment of earthquake and tsunami potential along the Antilles Subduction Zone. The surveyed island, Anegada, is 120 km south of the Puerto Rico Trench and is near the paths of hurricanes Donna (1960) and Earl (2010), which were at or near category 4 when at closest approach. The survey focused on Earl's geologic effects, related them to the surge from Hur

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41

Escuder-Viruete, J., A. Suárez-Rodríguez, J. Gabites, and A. Pérez-Estaún. "The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc-continent collision and ophiolite emplacement in the northern Caribbean subduction-accretionary prism." Solid Earth Discussions 7, no. 2 (2015): 1827–76. http://dx.doi.org/10.5194/sed-7-1827-2015.

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Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic "mélange" originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation fro

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42

Escuder-Viruete, J., Á. Suárez-Rodríguez, J. Gabites, and A. Pérez-Estaún. "The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc–continent collision and ophiolite emplacement in the northern Caribbean subduction–accretionary prism." Solid Earth 7, no. 1 (2016): 11–36. http://dx.doi.org/10.5194/se-7-11-2016.

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Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic “mélange” originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation fro

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43

ten Brink, Uri, Claudia Flores, Jason Chaytor, and Marcie Purkey Phillips. "Kilometers-scale subsidence of the inner Puerto Rico Trench wall since the Pleistocene." Geology, May 29, 2025. https://doi.org/10.1130/g53315.1.

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We have observed a thin veneer of Pleistocene-age carbonate rocks on the southern side of Mona Block, a seamount northwest of Puerto Rico, above a water depth of 1800 m. Mona Block is located within the inner wall of the Puerto Rico Trench. A similar veneer of carbonate rocks (corals and pavement) was encountered during a deep submergence vehicle (DSV) Alvin dive in 1976 on the north side of Mona Block at depths of 3650−2900 m. We also observed a remnant Oligocene−Pliocene carbonate platform at a depth of 2080 m on the east side of the block. Restoring the carbonate outcrops to near sea level

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44

ten Brink, Uri. "Vertical motions of the Puerto Rico Trench and Puerto Rico and their cause." Journal of Geophysical Research 110, B6 (2005). http://dx.doi.org/10.1029/2004jb003459.

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45

Thompson Jobe, Jessie, Richard Briggs, Kenneth Stephen Hughes, et al. "Neotectonic Mapping of Puerto Rico." Seismica 3, no. 1 (2024). http://dx.doi.org/10.26443/seismica.v3i1.1102.

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Puerto Rico is part of the Puerto Rico-Virgin Islands microplate, along the Caribbean–North American plate boundary between the Puerto Rico trench subduction zone and the Muertos Trough incipient subduction zone. Despite recent seismicity and geodetically constrained deformation of ~3 mm/yr of left-lateral shear across the island, Quaternary fault locations remain largely uncertain. Preservation of recent faulting in the landscape is masked by distributed faulting, high weathering rates of the tropical climate, steep topography, widespread landsliding, and extensive agriculture, deforestation,

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46

Harmon, Nicholas, William Danforth, Uri Ten Brink, et al. "Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench." Geophysical Research Letters 52, no. 10 (2025). https://doi.org/10.1029/2024gl114362.

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AbstractPetit‐spot volcanism occurs in intraplate settings along the outer rise of subducting plates. Here we present evidence for petit‐spot type of volcanism from multibeam bathymetry and backscatter data from the Puerto Rico Trench (PRT). It is the first report of such volcanism in the Atlantic basin. Up to 34 possible petit‐spot volcanic cones are mapped in the eastern section of the PRT, with an average diameter of 950 m and a mean height of 92 m. The seamounts are in a region of the PRT that has the longest and highest bending faults, up to 50.6 km long and 1.49 km high. Some of the volc

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Jamieson, Alan J., and Thomas D. Linley. "Hydrozoans, scyphozoans, larvaceans and ctenophores observed in situ at hadal depths." Journal of Plankton Research, January 5, 2021. http://dx.doi.org/10.1093/plankt/fbaa062.

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Abstract Hydrozoa, Scyphozoa, Larvacea (Appendicularia) and Ctenophora are not typically associated with hadal communities. Here, we report observations of these groups based on 136 benthic camera lander deployments that spanned all five oceans, encompassing 14 deep sites, culminating in &gt;1000 h of video in the near-bottom waters between 5000 and 10 925 m. Of the Hydrozoa, trachymedusae had a maximum depth of 9066 m in the Mariana Trench, narcomedusae were recorded to a maximum depth of 7220 m in the San Cristobal Trench and a single siphonophore was seen at 7888 m in the Mariana Trench

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"Fe-Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench." Oceanographic Literature Review 40, no. 7 (1993): 595. https://doi.org/10.1016/0967-0653(93)94273-2.

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"A depauperate benthic assemblage from the nutrient-poor sediments of the Puerto Rico Trench." Oceanographic Literature Review 42, no. 11 (1995): 1003. https://doi.org/10.1016/0967-0653(95)91268-9.

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Edward A. Krieg, Arthur A. Meyerhof. "Puerto Rico Trench: Site of a Shallow-Water Tertiary Basin and Regional Tectonic Implications: ABSTRACT." AAPG Bulletin 69 (1985). http://dx.doi.org/10.1306/ad4620bf-16f7-11d7-8645000102c1865d.

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